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Completed Phase 1Phase 2 Interventional Results available

Study of NKTR 255 in Combination With Cetuximab in Solid Tumors

ClinicalTrials.gov ID: NCT04616196

Public ClinicalTrials.gov record NCT04616196. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 1, 2026, 11:23 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 1b/2, Open-label, Multicenter, Dose Escalation and Dose Expansion Study of NKTR-255 Monotherapy or in Combination With Cetuximab as a Salvage Regimen for Solid Tumors

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This is a Phase 1b/2, open-label multicenter study evaluating NKTR-255 as a monotherapy and together with cetuximab in patients with head and neck squamous cell carcinoma (HNSCC) and colorectal carcinoma (CRC).

Study identification

NCT ID
NCT04616196
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1, Phase 2
Lead sponsor
Nektar Therapeutics
Industry
Enrollment
25 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Oct 29, 2020
Primary completion
Mar 29, 2023
Completion
Mar 29, 2023
Last update posted
Jun 7, 2025

2020 – 2023

United States locations

U.S. sites
6
U.S. states
3
U.S. cities
6
Facility City State ZIP Site status
University of California, San Diego San Diego California 92103
University of California, San Francisco San Francisco California 94158
University of Minnesota Minneapolis Minnesota 55455
Mary Crowley Cancer Research Dallas Texas 75230
MD Anderson Cancer Center Houston Texas 77030
START Center for Cancer Care San Antonio Texas 78229

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

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About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04616196, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jun 7, 2025 · Synced Sep 1, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT04616196 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →