Skip to content
← Full study record

NCT03043872 · OUTCOME

Pharmacokinetics (PK) of Durvalumab; Peak and Trough Serum Concentrations in the Global Cohort

Durvalumab ± Tremelimumab in Combination With Platinum Based Chemotherapy in Untreated Extensive-Stage Small Cell Lung Cancer (CASPIAN) · Source last updated 2026-07-16

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
GEOMETRIC_MEAN
Unit
micrograms/milliliter (μg/mL)
Interval / dispersion
Geometric Coefficient of Variation
Time frame
Samples were collected post-dose on Day 1 (Week 0), and pre-dose on Weeks 3 and 12. Assessed at the global cohort final analysis DCO (27 January 2020).

What was measured

To evaluate PK, blood samples were collected at pre-specified timepoints and peak and trough serum concentrations of durvalumab were determined. Peak concentration on Week 0 is the post-infusion concentration of Week 0 (collected within 10 minutes of the end of infusion). Trough concentrations on Weeks 3 and 12 are the pre-infusion concentrations of Weeks 3 and 12, respectively.

Analysis population: The global PK analysis set included all patients randomized prior to the end of global recruitment who received at least 1 dose of investigational product (IP), per the protocol for whom any post-dose PK data were available. PK for durvalumab was performed for the D + T + EP and D + EP groups only.

Groups in this outcome

Global Cohort: D + T + EP

During Chemotherapy: Patients received durvalumab (D) 1500 mg in combination with tremelimumab (T) 75 mg IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). For chemotherapy (EP), patients received etoposide (80-100 mg/m\^2) with either carboplatin (area under the curve 5-6) or cisplatin (75-80 mg/m\^2) IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). Post-Chemotherapy: Patients then continued to receive durvalumab 1500 mg IV infusion Q4W from Week 12 until PD, unless there was unacceptable toxicity, withdrawal of consent, or another discontinuation criterion was met. Patients also received an additional dose of tremelimumab 75 mg IV infusion post-chemotherapy (in combination with durvalumab) at Week 16 if they completed all 4 doses of durvalumab + tremelimumab during chemotherapy.

Global Cohort: D + EP

During Chemotherapy: Patients received durvalumab (D) 1500 mg IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). For chemotherapy (EP), patients received etoposide (80-100 mg/m\^2) with either carboplatin (area under the curve 5-6) or cisplatin (75-80 mg/m\^2) IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). Post-Chemotherapy: Patients then continued to receive durvalumab 1500 mg IV infusion Q4W from Week 12 until PD, unless there was unacceptable toxicity, withdrawal of consent, or another discontinuation criterion was met.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Global Cohort: D + T + EP257
Global Cohort: D + EP261

Reported measurements

Week 0: peak concentration

Analysis denominator · Participants

GroupSource count
Global Cohort: D + T + EP239
Global Cohort: D + EP226
Values in micrograms/milliliter (μg/mL) · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Global Cohort: D + T + EP447.378.21Not reportedNot reportedNot reported
Global Cohort: D + EP502.630.52Not reportedNot reportedNot reported
Week 3: trough concentration

Analysis denominator · Participants

GroupSource count
Global Cohort: D + T + EP232
Global Cohort: D + EP237
Values in micrograms/milliliter (μg/mL) · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Global Cohort: D + T + EP91.8674.36Not reportedNot reportedNot reported
Global Cohort: D + EP109.564.55Not reportedNot reportedNot reported
Week 12: trough concentration

Analysis denominator · Participants

GroupSource count
Global Cohort: D + T + EP173
Global Cohort: D + EP200
Values in micrograms/milliliter (μg/mL) · Interval/dispersion: Geometric Coefficient of Variation
GroupValueSpreadLowerUpperComment
Global Cohort: D + T + EP199.249.58Not reportedNot reportedNot reported
Global Cohort: D + EP239.350.68Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        78.21
        value
        447.3
      2. group Id
        OG001
        spread
        30.52
        value
        502.6
    denoms
    1. counts
      1. group Id
        OG000
        value
        239
      2. group Id
        OG001
        value
        226
      units
      Participants
    title
    Week 0: peak concentration
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        74.36
        value
        91.86
      2. group Id
        OG001
        spread
        64.55
        value
        109.5
    denoms
    1. counts
      1. group Id
        OG000
        value
        232
      2. group Id
        OG001
        value
        237
      units
      Participants
    title
    Week 3: trough concentration
  3. categories
    1. measurements
      1. group Id
        OG000
        spread
        49.58
        value
        199.2
      2. group Id
        OG001
        spread
        50.68
        value
        239.3
    denoms
    1. counts
      1. group Id
        OG000
        value
        173
      2. group Id
        OG001
        value
        200
      units
      Participants
    title
    Week 12: trough concentration
denoms
  1. counts
    1. group Id
      OG000
      value
      257
    2. group Id
      OG001
      value
      261
    units
    Participants
description
To evaluate PK, blood samples were collected at pre-specified timepoints and peak and trough serum concentrations of durvalumab were determined. Peak concentration on Week 0 is the post-infusion concentration of Week 0 (collected within 10 minutes of the end of infusion). Trough concentrations on Weeks 3 and 12 are the pre-infusion concentrations of Weeks 3 and 12, respectively.
dispersion Type
Geometric Coefficient of Variation
groups
  1. description
    During Chemotherapy: Patients received durvalumab (D) 1500 mg in combination with tremelimumab (T) 75 mg IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). For chemotherapy (EP), patients received etoposide (80-100 mg/m\^2) with either carboplatin (area under the curve 5-6) or cisplatin (75-80 mg/m\^2) IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). Post-Chemotherapy: Patients then continued to receive durvalumab 1500 mg IV infusion Q4W from Week 12 until PD, unless there was unacceptable toxicity, withdrawal of consent, or another discontinuation criterion was met. Patients also received an additional dose of tremelimumab 75 mg IV infusion post-chemotherapy (in combination with durvalumab) at Week 16 if they completed all 4 doses of durvalumab + tremelimumab during chemotherapy.
    id
    OG000
    title
    Global Cohort: D + T + EP
  2. description
    During Chemotherapy: Patients received durvalumab (D) 1500 mg IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). For chemotherapy (EP), patients received etoposide (80-100 mg/m\^2) with either carboplatin (area under the curve 5-6) or cisplatin (75-80 mg/m\^2) IV infusion Q3W for 4 doses/cycles (Weeks 0, 3, 6 and 9). Post-Chemotherapy: Patients then continued to receive durvalumab 1500 mg IV infusion Q4W from Week 12 until PD, unless there was unacceptable toxicity, withdrawal of consent, or another discontinuation criterion was met.
    id
    OG001
    title
    Global Cohort: D + EP
param Type
GEOMETRIC_MEAN
population Description
The global PK analysis set included all patients randomized prior to the end of global recruitment who received at least 1 dose of investigational product (IP), per the protocol for whom any post-dose PK data were available. PK for durvalumab was performed for the D + T + EP and D + EP groups only.
reporting Status
POSTED
time Frame
Samples were collected post-dose on Day 1 (Week 0), and pre-dose on Weeks 3 and 12. Assessed at the global cohort final analysis DCO (27 January 2020).
title
Pharmacokinetics (PK) of Durvalumab; Peak and Trough Serum Concentrations in the Global Cohort
type
SECONDARY
unit Of Measure
micrograms/milliliter (μg/mL)

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice