🏛️ Verified NIH Record • Updated 2026-07-29

Cyclophosphamide and Sirolimus for the Treatment of Metastatic, RAI-refractory, Differentiated Thyroid Cancer (NCT03099356)

An Open Label Phase II Trial Evaluating the Efficacy of Cyclophosphamide and Sirolimus for the Treatment of Metastatic, RAI-refractory, Differentiated Thyroid Cancer

🟢 Recruiting Phase2 💊 Investigational Drug / Biologic Sponsor: University of Michigan Rogel Cancer Center

🩺 Plain-English Summary (8th-Grade Level)

This study will be a non-randomized pilot trial using Cyclophosphamide and Sirolimus for the treatment of metastatic differentiated thyroid cancer. Patients will be treated with Sirolimus 4 mg, PO, days 1-28 as well as Cyclophosphamide 100 mg, PO, days 1-5 and 15-19. Cycle length will be 28 days. Patients will be monitored closely for toxicity and undergo imaging to evaluate efficacy once every 2 cycles.

Who can join: To join this study, participants generally need to meet the listed inclusion criteria (11 items) and avoid the listed exclusions (15 items).

Location: University of Michigan Cancer Center — Ann Arbor, Michigan

Age range: 18 Years

🧪 Interventions in This Study

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Check every box below. If you can check all of them, you may meet the study's basic screening requirements (final eligibility is confirmed by the site team).

Usually NOT eligible if any of the following apply:

  • Exclusion Criteria:
  • Inability to obtain Foundation One testing on archival tissue, or, lack of previous Next Generation Sequencing
  • Chemotherapy, tyrosine kinase inhibitor, or radiation therapy within 4 weeks
  • Prior experimental therapy within 4 weeks of planned start of this trial
  • 131I therapy within 24 weeks before entry (4 weeks if negative post-treatment scan)
  • Previous treatment with an mTOR inhibitor
  • Patients who are currently receiving treatment with strong inhibitors or inducers of CYP3A4 or P-glycoprotein that cannot be discontinued at least one week prior to the start of treatment with Cyclophosphamide and Sirolimus
  • Impairment of GI (gastrointestinal) function or GI disease that may significantly alter the absorption of study medications (e.g., ulcerative diseases, uncontrolled nausea, vomiting, diarrhea, malabsorption syndrome, small bowel resection) including dependence on a G-Tube for administration of medications.
  • A serious uncontrolled medical disorder or active infection that would impair their ability to receive study treatment
  • Patients with known sensitivities to either cyclophosphamide and/or sirolimus
  • Patients with known urinary outflow obstruction
  • Dementia or significantly altered mental status that would prohibit the understanding or rendering of informed consent and compliance with the requirements of this protocol

🔍 Extracted verbatim from the official NIH eligibility criteria. Always confirm with the study coordinator.

📍 All Participating Trial Locations (1 Sites)

  • University of Michigan Cancer Center — Ann Arbor, Michigan

📞 Contact the Study Coordinator

Phone: (800) 865-1125

Email: canceranswerline@umich.edu

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

💰 Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
🏛️ View Official NIH Record ↗