Phase 1 Thyroid Cancer Trial, Recruiting NCT05355701 Sponsor: Pfizer Condition: Thyroid Cancer
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Phase 1 Thyroid Cancer Trial, Recruiting

NCT05355701
Recruiting Phase 1

Who may be able to join

AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI

Who might be able to join this trial:

  • People who have been diagnosed with an advanced or metastatic solid tumour, including primary brain tumours (tumours that started in the brain).
  • People whose tumour has a specific gene change called a BRAF alteration (either a V600 type or a non-V600 Class II/Class III type), detected in tumour tissue and/or a blood test.
  • People whose cancer has continued to grow or spread during or after their most recent treatment, and for whom no satisfactory other treatment options are available (applies to certain parts of the trial).
  • People with melanoma or colorectal cancer (bowel cancer) who have already received specific previously approved treatments for their cancer type (confirm with trial site for exact requirements).
  • For one specific group (melanoma with BRAF V600 mutation): people who have already received treatment with a BRAF inhibitor, a MEK inhibitor, and an immune checkpoint inhibitor therapy.
  • For one specific bowel cancer group: people who have received at least 2 cycles of a chemotherapy called 5-FU, have not previously had a BRAF inhibitor or EGFR inhibitor, and — if their cancer has a specific genetic feature (MSI-H/dMMR) — have also received immune checkpoint inhibitor therapy.
  • For another specific bowel cancer group: people who have received no more than 2 cycles of 5-FU chemotherapy, have not previously had a BRAF inhibitor or EGFR inhibitor, and — if their cancer has a specific genetic feature (MSI-H/dMMR) — have also received immune checkpoint inhibitor therapy.

Who may not be able to join:

  • People who have a brain metastasis (a tumour that has spread to the brain) that is larger than 4 cm in size.
  • People who are currently receiving other anti-cancer treatments or certain targeted drug therapies at the time the trial treatment would begin.
  • People who have a history of, or currently have, a condition called retinal vein occlusion (a blockage of a blood vessel in the eye), current risk factors for this condition, or a history of degenerative disease of the retina (the back of the eye).
  • People who have a neuromuscular disorder (a condition affecting the muscles and nerves) that is associated with raised levels of a muscle enzyme called creatine kinase (CK).

Important: Always verify eligibility with the trial site directly before applying.

Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.

This is a simplified plain English summary of the eligibility criteria. Full criteria are set by the trial investigators and may include additional requirements not shown here. Never self-exclude from a trial based on this summary. Contact the trial site directly to confirm your eligibility.
Last synced 28 July 2026
Phase 1: approximately ~10% of drugs entering this phase reach regulatory approval, based on published industry-wide historical data. This is not specific to this trial.
Phase success rates shown are historical industry-wide averages based on published data. They are not a prediction for this specific trial or your individual situation.

Contact this trial

Principal Investigator: Pfizer CT.gov Call Center, Pfizer

Phone: 1-800-718-1021

Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.

GP referral letter

Print a one-page summary to share with your doctor.

Trial details

Status
Recruiting
Phase
Phase 1
Sponsor
Registry
ClinicalTrials.gov
Start date
5 July 2022
Est. completion
23 April 2028

Where this trial is recruiting

🇨🇦 Canada 🇮🇱 Israel 🇺🇸 United States

Primary endpoints

Number of participants with dose limiting toxicities (DLTs) (Part 1 and Part 2); Number of participants with treatment-emergent adverse events (AEs) (Part 1 and Part 2); Number of participants with clinically significant change from baseline in laboratory abnormalities (Part 1 and Part 2); Number of participants with clinically significant change from baseline in vital sign abnormalities (Part 1 and Part 2); Dose interruptions due to AEs (Part 1 and Part 2); Dose dose modifications due to AEs (Part 1 and Part 2); Discontinuations due to AEs (Part 1 and Part 2); Overall response rate (ORR) (Par...

Can't join this trial?

Expanded access pathways

If this trial is not available to you, other access pathways may exist. In Australia, the TGA Special Access Scheme allows access to unapproved therapeutic goods for individual patients.

TGA Special Access Scheme information

Find other recruiting trials on ClinicalTrials.gov

Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.

Trial recruitment status can change without notice between our nightly data updates. Always contact the trial site directly to confirm current recruitment status before making any decisions or travel arrangements.

View original record on ClinicalTrials.gov