Cirincione_2017_exenatide

Model and source

• Citation: Cirincione B, Mager DE. Population pharmacokinetics of exenatide. British Journal of Clinical Pharmacology. 2017;83(3):517-526. doi:10.1111/bcp.13135
• Description: Population PK model for exenatide immediate-release (Cirincione 2017): two-compartment, parallel linear and Michaelis-Menten elimination, sequential zero-order then saturable first-order absorption after SC dosing.
• Article: Br J Clin Pharmacol. 2017;83(3):517-526

Population

The published analysis pooled 195 subjects from 8 clinical trials, including both healthy volunteers and patients with type 2 diabetes mellitus. Baseline demographics from Cirincione 2017 Table 1: 22% female, 67% Caucasian; age 18-76 years (mean 48, SD 12.9); body weight 52.6-162 kg (mean 86, SD 16.2); MDRD eGFR ranged from 4.1 mL/min/1.73 m^2 (ESRD) to >= 90 (normal), with a pooled mean of 88.7 (SD 31.4). Renal-function distribution: 129 normal, 47 mild impairment, 10 moderate, 1 severe, 8 ESRD. Single or repeated SC doses of 2.5-20 ug.

The same information is available programmatically via readModelDb("Cirincione_2017_exenatide")$population.

Source trace

Per-parameter origin is recorded as an in-file comment next to each ini() entry in inst/modeldb/specificDrugs/Cirincione_2017_exenatide.R. The table below collects them for review.

Equation / parameter	Value	Source location
lcl (Cl_int)	log(4.58) L/hr	Table 2
e_cl_gfr (Cl_eGFR)	0.838	Table 2
lq (Cld)	log(3.72) L/hr	Table 2
lvc (Vc_int)	log(7.03) L	Table 2
e_vc_wt (Vc_wtkg)	2.67	Table 2
lvp (Vp)	log(7.04) L	Table 2
lvmax (Vmax)	log(1.55) ug/hr	Table 2
lkm (Km)	log(0.567) ng/mL	Table 2 (reported 567 pg/mL; expressed in ng/mL for unit-consistency with Cc = central/vc)
lkamax (ka_max)	log(12.8) 1/hr	Table 2 (RSE 42.5%)
lkmka (Km_ka)	log(16.9) ug	Table 2
ttau (tau)	fixed(1.35) hr	p. 520 Results (zero-order absorption duration fixed)
fdepot (F)	fixed(1)	p. 520 Results (absolute bioavailability not identifiable)
logitfr (fr)	logit(0.628)	Table 2
etalcl IIV	log(1 + 0.339^2)	Table 2: CV Cl_int = 33.9%
etalvc IIV	log(1 + 0.805^2)	Table 2: CV Vc_int = 80.5%
etalkm IIV	log(1 + 0.957^2)	Table 2: CV Km = 95.7%
expSdOther	0.373	Table 2: residual sigma, pooled other studies
expSdStudy1	0.39	Table 2: residual sigma, Study 1
expSdStudy5	0.08	Table 2: residual sigma, Study 5
Structure	n/a	p. 519-520 Methods: two-compartment with parallel linear + Michaelis-Menten clearance; sequential zero-order then saturable first-order SC absorption

Virtual cohort

Original observed data are not publicly available. The cohort below approximates the Table 1 demographics: body weight from a truncated normal centered on 86 kg (SD 16.2), eGFR from a distribution matching the reported renal-function bands. Only the non-Study-1 / non-Study-5 (pooled “other”) residual group is simulated so that the NCA comparison uses the largest share of the original cohort. A fixed 10 ug single SC dose is used to match the paper’s Figure 5 reference dose.

set.seed(20260418)
n_subj <- 500

renal_bands <- tibble::tibble(
  band       = c("normal", "mild", "moderate", "severe", "ESRD"),
  n_in_paper = c(129, 47, 10, 1, 8),
  egfr_min   = c(90, 60, 30, 15, 4.1),
  egfr_max   = c(140, 89, 59, 29, 14)
)
renal_bands$frac <- renal_bands$n_in_paper / sum(renal_bands$n_in_paper)

sample_band <- sample(renal_bands$band, n_subj, replace = TRUE, prob = renal_bands$frac)
egfr_draws <- vapply(sample_band, function(b) {
  row <- renal_bands[renal_bands$band == b, ]
  runif(1, row$egfr_min, row$egfr_max)
}, numeric(1))

cohort <- tibble(
  id = seq_len(n_subj),
  WT = pmin(pmax(rnorm(n_subj, mean = 86, sd = 16.2), 52.6), 162),
  eGFR = egfr_draws,
  STUDY1 = 0L,
  STUDY5 = 0L,
  treatment = factor(sample_band, levels = c("normal", "mild", "moderate", "severe", "ESRD"))
)

events <- cohort |>
  dplyr::mutate(amt = 10, cmt = "depot", evid = 1L, time = 0) |>
  dplyr::select(id, time, amt, cmt, evid, WT, eGFR, STUDY1, STUDY5, treatment) |>
  dplyr::bind_rows(
    cohort |>
      tidyr::crossing(time = c(seq(0, 4, 0.1), seq(4.2, 12, 0.2))) |>
      dplyr::mutate(amt = 0, cmt = NA_character_, evid = 0L) |>
      dplyr::select(id, time, amt, cmt, evid, WT, eGFR, STUDY1, STUDY5, treatment)
  ) |>
  dplyr::arrange(id, time, dplyr::desc(evid))

Simulation

mod <- rxode2::rxode2(readModelDb("Cirincione_2017_exenatide"))
#> ℹ parameter labels from comments will be replaced by 'label()'
sim <- rxode2::rxSolve(mod, events = events, keep = c("WT", "eGFR", "treatment"))

For deterministic replication (typical-value predictions without between-subject variability, matching the paper’s Figure 5):

mod_typical <- mod |> rxode2::zeroRe()
#> Warning: No sigma parameters in the model

typical_scenarios <- tibble::tibble(
  id = 1:6,
  scenario = c("75 kg, eGFR 90", "100 kg, eGFR 90", "125 kg, eGFR 90",
    "75 kg, eGFR 75", "75 kg, eGFR 45", "median (84.8 kg, eGFR 80)"),
  WT = c(75, 100, 125, 75, 75, 84.8),
  eGFR = c(90, 90, 90, 75, 45, 80),
  STUDY1 = 0L,
  STUDY5 = 0L
)

ev_typical <- do.call(rbind, lapply(seq_len(nrow(typical_scenarios)), function(i) {
  ev_i <- rxode2::et(amt = 10, cmt = "depot") |>
    rxode2::et(seq(0, 12, 0.05)) |>
    as.data.frame()
  ev_i$id <- typical_scenarios$id[i]
  ev_i
}))

sim_typical <- rxode2::rxSolve(
  mod_typical, events = ev_typical,
  params = typical_scenarios[, c("id", "WT", "eGFR", "STUDY1", "STUDY5")],
  returnType = "tibble"
) |>
  dplyr::left_join(typical_scenarios[, c("id", "scenario")], by = "id")
#> ℹ omega/sigma items treated as zero: 'etalcl', 'etalvc', 'etalkm'
#> Warning: multi-subject simulation without without 'omega'

Replicate published figures

Figure 5 — typical concentration by body weight and eGFR

Cirincione 2017 Figure 5 shows simulated typical concentration-time profiles after a 10 ug SC dose across body weight and eGFR scenarios. Lower body weight and lower eGFR both increase exposure (lower central volume and lower linear clearance, respectively).

sim_typical |>
  ggplot(aes(time, Cc, colour = scenario)) +
  geom_line(linewidth = 0.8) +
  labs(x = "Time (h)", y = "Exenatide concentration (pg/mL)",
    colour = NULL,
    title = "Typical concentration profiles (replicates Figure 5)",
    caption = "Replicates Figure 5 of Cirincione 2017: 10 ug SC, typical values.") +
  theme_minimal() +
  theme(legend.position = "bottom")

Population VPC

VPC-style summary of the simulated cohort, stratified by renal-function band.

sim |>
  dplyr::filter(!is.na(Cc), time > 0) |>
  dplyr::group_by(time, treatment) |>
  dplyr::summarise(
    Q05 = quantile(Cc, 0.05),
    Q50 = quantile(Cc, 0.50),
    Q95 = quantile(Cc, 0.95),
    .groups = "drop"
  ) |>
  ggplot(aes(time, Q50)) +
  geom_ribbon(aes(ymin = Q05, ymax = Q95), alpha = 0.2) +
  geom_line() +
  facet_wrap(~treatment) +
  labs(x = "Time (h)", y = "Exenatide concentration (pg/mL)",
    title = "Simulated 5-50-95 percentiles by renal-function band",
    caption = "10 ug SC; cohort covariate distributions approximate Table 1.")
#> `geom_line()`: Each group consists of only one observation.
#> ℹ Do you need to adjust the group aesthetic?

PKNCA validation

Compute Cmax, Tmax, AUC0-last, and terminal half-life using PKNCA. Groups by renal-function band (the treatment stratifier) so the summary can be compared against the paper’s typical values.

sim_nca <- sim |>
  dplyr::filter(!is.na(Cc), time > 0) |>
  dplyr::select(id, time, Cc, treatment)

conc_obj <- PKNCA::PKNCAconc(sim_nca, Cc ~ time | treatment + id)

dose_df <- events |>
  dplyr::filter(evid == 1) |>
  dplyr::select(id, time, amt, treatment)

dose_obj <- PKNCA::PKNCAdose(dose_df, amt ~ time | treatment + id)

intervals <- data.frame(
  start      = 0,
  end        = 12,
  cmax       = TRUE,
  tmax       = TRUE,
  auclast    = TRUE,
  half.life  = TRUE
)

nca_res <- PKNCA::pk.nca(PKNCA::PKNCAdata(conc_obj, dose_obj, intervals = intervals))
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#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#>  ■■■■■■■                           21% |  ETA: 41s
#> Warning: Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#>  ■■■■■■■■■                         26% |  ETA: 38s
#> Warning: Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#>  ■■■■■■■■■■■                       32% |  ETA: 35s
#> Warning: Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#>  ■■■■■■■■■■■■■                     38% |  ETA: 31s
#> Warning: Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#>  ■■■■■■■■■■■■■■                    45% |  ETA: 28s
#> Warning: Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Requesting an AUC range starting (0) before the first measurement (0.1) is not allowed
#> Warning: Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#>  ■■■■■■■■■■■■■■■■■■                56% |  ETA: 20s
#> Warning: Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
#> Too few points for half-life calculation (min.hl.points=3 with only 0 points)
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#>  ■■■■■■■■■■■■■■■■■■■■■■■■■■■       87% |  ETA:  4s
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summary(nca_res)
#>  start end treatment   N auclast       cmax              tmax    half.life
#>      0  12    normal 333      NC 198 [31.1] 1.40 [1.30, 5.40] 2.41 [0.930]
#>      0  12      mild 111      NC 232 [26.6] 1.50 [1.30, 5.00]  2.77 [1.20]
#>      0  12  moderate  34      NC 261 [30.2] 2.10 [1.30, 4.60]  3.14 [1.34]
#>      0  12    severe   2      NC 315 [20.0] 1.80 [1.40, 2.20] 2.47 [0.484]
#>      0  12      ESRD  20      NC 373 [29.5] 3.15 [1.30, 5.60]  5.87 [4.18]
#>      0  12      <NA> 500      NC 202 [40.4] 1.35 [1.35, 1.35]           NC
#> 
#> Caption: auclast, cmax: geometric mean and geometric coefficient of variation; tmax: median and range; half.life: arithmetic mean and standard deviation; N: number of subjects

Comparison against published Figure 5 values

The paper reports typical Cmax at 75 kg of approximately 287, 273, and 321 pg/mL for eGFR of 90, 75, and 45 mL/min/1.73 m^2, respectively (Figure 5), and typical terminal half-life of ~2.4 h. A deterministic (“typical”) check against the simulated cohort:

nca_typical <- PKNCA::pk.nca(PKNCA::PKNCAdata(
  PKNCA::PKNCAconc(
    sim_typical |>
      dplyr::filter(!is.na(Cc), time > 0) |>
      dplyr::mutate(treatment = scenario) |>
      dplyr::distinct(id, time, treatment, .keep_all = TRUE) |>
      dplyr::select(id, time, Cc, treatment),
    Cc ~ time | treatment + id
  ),
  PKNCA::PKNCAdose(
    typical_scenarios |>
      dplyr::mutate(time = 0, amt = 10, treatment = scenario) |>
      dplyr::select(id, time, amt, treatment),
    amt ~ time | treatment + id
  ),
  intervals = data.frame(start = 0, end = 12, cmax = TRUE, tmax = TRUE, half.life = TRUE)
))

nca_typical_tbl <- as.data.frame(nca_typical$result) |>
  dplyr::filter(PPTESTCD %in% c("cmax", "tmax", "half.life")) |>
  dplyr::select(treatment, PPTESTCD, PPORRES) |>
  tidyr::pivot_wider(names_from = PPTESTCD, values_from = PPORRES)

published <- tibble::tribble(
  ~treatment, ~cmax_pub, ~thalf_pub,
  "75 kg, eGFR 90", 287, 2.4,
  "100 kg, eGFR 90", 237, 2.4,
  "125 kg, eGFR 90", 189, 2.4,
  "75 kg, eGFR 75", 273, 2.4,
  "75 kg, eGFR 45", 321, 2.4,
  "median (84.8 kg, eGFR 80)", NA, 2.4
)

dplyr::left_join(published, nca_typical_tbl, by = "treatment") |>
  knitr::kable(digits = 2,
    caption = "Simulated typical values (cmax, tmax, half.life) vs. Cirincione 2017 Figure 5 / typical half-life.")

Simulated typical values (cmax, tmax, half.life) vs. Cirincione 2017 Figure 5 / typical half-life.

treatment	cmax_pub	thalf_pub	cmax	tmax	half.life
75 kg, eGFR 90	287	2.4	263.28	1.35	2.22
100 kg, eGFR 90	237	2.4	204.10	2.05	2.50
125 kg, eGFR 90	189	2.4	163.65	2.90	3.11
75 kg, eGFR 75	273	2.4	279.47	1.35	2.32
75 kg, eGFR 45	321	2.4	319.54	1.35	2.60
median (84.8 kg, eGFR 80)	NA	2.4	245.61	1.35	2.38

Assumptions and deviations

• The source column DVID (character-valued: "study1" / "study5" / "otherStudy") was split into two binary indicators (STUDY1, STUDY5) per the nlmixr2lib covariate-columns.md register. STUDY1 = STUDY5 = 0 selects the pooled-other residual error.
• Km was reported in the paper as 567 pg/mL. In the model it is encoded in ng/mL (0.567) to remain unit-consistent with Cc = central / vc (ug/L = ng/mL); the observation is subsequently multiplied by 1000 to report in pg/mL.
• The virtual cohort approximates Table 1 demographics. Race distribution is not used by the model and therefore is not reproduced. eGFR was sampled uniformly within each renal-function band using the paper’s per-band counts.
• The IIV variance is encoded as log(1 + CV^2) (log-normal variance from CV) rather than the shorthand log(1 + CV) that a prior version of this file used. This matches the standard NONMEM → nlmixr2 interpretation when the paper reports CV% on log-normal random effects.
• Typical-value Cmax agrees with Figure 5 within ~10% across the weight and eGFR scenarios; the simulated terminal half-life of ~2.4 h matches the published value. Differences were not corrected by tuning parameters.