Recruiting OBSERVATIONAL NCT06606028

Tumor-Informed ctDNA Testing for MRD Following Treatment of Squamous Cell Carcinoma

Tumor-informed ctDNA Testing for Minimal Residual Disease Monitoring Following Curative-intent Treatment of Squamous Cell Carcinoma of the Head and Neck.

Sponsor: Haystack Oncology, Inc.

Conditions Cutaneous Squamous Cell Carcinoma (CSCC) Squamous Cell Carcinoma Head and Neck Cancer (HNSCC) Squamous Cell Carcinoma of Head and Neck Squamous Cell Carcinoma of Skin

Interventions Blood Specimen Collection Medical Record Review Tumor Tissue Collection

Updated 4 times since 2024 Last updated: Dec 4, 2025 Started: Oct 9, 2024 Primary completion: Dec 30, 2028 Completion: Dec 30, 2029

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A observational or N/A phase clinical study on Cutaneous Squamous Cell Carcinoma (CSCC) and Squamous Cell Carcinoma Head and Neck Cancer (HNSCC), this trial is actively recruiting participants. The trial is conducted by Haystack Oncology, Inc. and has accumulated 4 data snapshots since 2024. Oncology trials at this stage typically focus on safety, tolerability, and early efficacy signals.

Status Flow

Change History

4 versions recorded

Jan 2026 — Present [monthly]

Recruiting
Dec 2025 — Jan 2026 [monthly]

Recruiting
Nov 2024 — Dec 2025 [monthly]

Recruiting

Status: Not Yet Recruiting → Recruiting
Oct 2024 — Nov 2024 [monthly]

Not Yet Recruiting

First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Haystack Oncology, Inc.
University of California, San Francisco

Data source: University of California, San Francisco

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• San Francisco, United States