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NCT03582475 · OUTCOME

Overall Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 (Cohorts 1 and 2)

Pembrolizumab With Combination Chemotherapy in Treating Participants With Locally Advanced or Metastatic Small Cell/Neuroendocrine Cancers of Urothelium or Prostate · Source last updated 2025-11-12

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

Measure
NUMBER
Unit
proportion of participents
Interval / dispersion
Not reported
Time frame
Up to 3 years

What was measured

Overall Response Rate (ORR) defined as patients by Response Evaluation Criteria in Solid Tumors (RECIST) v 1.1 exhibited a complete or partial response (CR or PR). CR defined as disappearance of all target lesions. PR defined as \>= 30% decrease in sum of the longest diameter of target lesions. .

Analysis population: one patient withdrew Cohort 2

Groups in this outcome

Cohort 1: Metastatic or Locally Advanced Naive Small Cell Bladder Cancer

Participants receive pembrolizumab IV over 30 minutes on day 1. Courses repeat every 3 weeks for 2 years in the absence of disease progression or unacceptable toxicity. Participants also receive standard of care chemotherapy comprising etoposide IV on days 1-3 and cisplatin IV or carboplatin IV on day 1 (Cohort 1). Treatment repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity. Carboplatin: Given IV Cisplatin: Given IV Docetaxel: Given IV Etoposide: Given IV Pembrolizumab: Given IV

Cohort 2: Small Cell or Neuroendocrine Prostate Cancer

Participants receive pembrolizumab IV over 30 minutes on day 1. Courses repeat every 3 weeks for 2 years in the absence of disease progression or unacceptable toxicity. Participants also receive standard of care chemotherapy comprising etoposide IV on days 1-3, carboplatin IV on day 1, and docetaxel IV on day 1 (Cohort 2). Treatment repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity.

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

Analysis denominator · Participants

GroupSource count
Cohort 1: Metastatic or Locally Advanced Naive Small Cell Bladder Cancer7
Cohort 2: Small Cell or Neuroendocrine Prostate Cancer7

Reported measurements

Source class 1
Values in proportion of participents · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Cohort 1: Metastatic or Locally Advanced Naive Small Cell Bladder Cancer0.43Not reportedNot reportedNot reportedNot reported
Cohort 2: Small Cell or Neuroendocrine Prostate Cancer0.43Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        0.43
      2. group Id
        OG001
        value
        0.43
denoms
  1. counts
    1. group Id
      OG000
      value
      7
    2. group Id
      OG001
      value
      7
    units
    Participants
description
Overall Response Rate (ORR) defined as patients by Response Evaluation Criteria in Solid Tumors (RECIST) v 1.1 exhibited a complete or partial response (CR or PR). CR defined as disappearance of all target lesions. PR defined as \>= 30% decrease in sum of the longest diameter of target lesions. .
groups
  1. description
    Participants receive pembrolizumab IV over 30 minutes on day 1. Courses repeat every 3 weeks for 2 years in the absence of disease progression or unacceptable toxicity. Participants also receive standard of care chemotherapy comprising etoposide IV on days 1-3 and cisplatin IV or carboplatin IV on day 1 (Cohort 1). Treatment repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity. Carboplatin: Given IV Cisplatin: Given IV Docetaxel: Given IV Etoposide: Given IV Pembrolizumab: Given IV
    id
    OG000
    title
    Cohort 1: Metastatic or Locally Advanced Naive Small Cell Bladder Cancer
  2. description
    Participants receive pembrolizumab IV over 30 minutes on day 1. Courses repeat every 3 weeks for 2 years in the absence of disease progression or unacceptable toxicity. Participants also receive standard of care chemotherapy comprising etoposide IV on days 1-3, carboplatin IV on day 1, and docetaxel IV on day 1 (Cohort 2). Treatment repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity.
    id
    OG001
    title
    Cohort 2: Small Cell or Neuroendocrine Prostate Cancer
param Type
NUMBER
population Description
one patient withdrew Cohort 2
reporting Status
POSTED
time Frame
Up to 3 years
title
Overall Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 (Cohorts 1 and 2)
type
PRIMARY
unit Of Measure
proportion of participents

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice