CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 35 enrolled
Drug / intervention
Pembrolizumabdrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03752333
NCT03752333Phase 2Completed

A Phase II Trial of Pembrolizumab in Cancer of Unknown Primary (CUPem)

Imperial College London·interventional·Posted Nov 26, 2018·Updated May 4, 2026

In Brief

A Phase 2 clinical trial evaluating Pembrolizumab for Cancer of Unknown Primary Site. Completed, enrolled 35 participants across 3 sites.

Detailed Summary

Abbreviated Title : CUPem Clinical Indication : A Phase II, Two-Stage, Trial of Pembrolizumab in Cancer of unknown primary Trial Type : Single Arm, non-randomised; Two-stage; Hypothesis generating Type of control : None Route of administration : IV Trial Blinding : N/A Treatment Groups :Two cohorts: (i) First Cohort: One or more lines of prior therapy (ii) Second Cohort: First Line untreated CUP patients Number of trial subjects : i) First Cohort: 20 ii) Second Cohort: 57 Eligibility Criteria : The Eligibility Criteria are the same as used in the A trial of chemotherapy for cancer of unknown primary (CUP-ONE) trial in the United Kingdom (UK), please see below. * Histologically confirmation of a diagnosis of CUP, with imaging and all diagnostic investigations confirmed as CUP within a CUP Multidisciplinary Team (MDT). * Eastern Cooperative Oncology Group (ECOG) Performance Status 0-2 * Patients must have disease that is not amenable to potentially curative options such as resection or radical radiotherapy * If patient's disease presentation precludes tumour biopsy (inaccessible or biopsy thought not to be in the patient's best interest), the patient is not study eligible. Estimated recruitment period : 2 years Estimated duration of trial : 3.9 years including set up, recruitment, follow up and close down. Duration of Participation : Cohort 1 = 6-8 months; Cohort 2 = 8-18 months Estimated average length of treatment per patient =6 months

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited Kingdom

Timeline

Phase 2CompletedFinished
20192020202120222023202420252026
First PostedNov 26, 2018
Enrollment StartFeb 22, 2019
Primary CompletionMar 31, 2025
TodayJul 2, 2026
Enrollment to primary: 6.1 yearsPosted 7.6 years ago

Interventions

Pembrolizumabdrug

Pembrolizumab has high affinity and potent receptor blocking activity for PD-1, based on preclinical in vitro data. Pembrolizumab has an acceptable preclinical and clinical safety profile and is in clinical development as an IV immunotherapy for advanced malignancies. The PD-1 pathway represents a major immune control switch, which may be engaged by tumour cells to overcome active T-cell immune surveillance. Pembrolizumab is a potent and highly selective humanized mAb of the Immunoglobulin (IgG4)/kappa isotype designed to directly block the interaction between PD-1 and its ligands, PD-L1 and PD-L2. This blockade enhances functional activity of the target lymphocytes to facilitate tumor regression and ultimately immune rejection.