🏛️ Verified NIH Record • Updated 2026-06-02

A Study of Immune Suppression Treatment for People With Sickle Cell Disease or β-Thalassemia Who Are Going to Receive an Allogeneic Hematopoietic Cell Transplantation (HCT) (NCT05736419)

Pre-Transplant Immune Suppression With Hematopoietic Cell Transplantation From Haploidentical Donors for Adults and Children With Sickle Cell Disease or ß-Thalassemia (Haplo PTCy)

🟢 Recruiting Phase2 💊 Investigational Drug / Biologic Sponsor: Memorial Sloan Kettering Cancer Center

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

Hematopoietic Cell Transplantation/HCT involves receiving healthy blood-forming cells (stem cells) from a donor to replace the diseased or damaged cells in participants' bone marrow. The researchers think giving participants treatment with fludarabine and dexamethasone, drugs that lower the activity of the body's immune system (immune suppression), before standard conditioning therapy and HCT may help prevent serious side effects, including graft failure and GvHD. In this study, depending on how participants' body responds to the fludarabine and dexamethasone, the study doctor may decide participants should receive another drug, called cyclophosphamide, instead of fludarabine. In addition, depending on the results of participants' routine blood tests, participants may receive the drugs bortezomib and rituximab, which also help with immune suppression.

Who can join: Review the eligibility criteria below.

Location: Memorial Sloan Kettering at Basking Ridge (Consent only) — Basking Ridge, New Jersey

Age range: 2 Years to 50 Years

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

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria ↗

📍 All Participating Trial Locations (6 Sites)

  • Memorial Sloan Kettering at Basking Ridge (Consent only) — Basking Ridge, New Jersey
  • Memorial Sloan Kettering Monmouth (Consent only) — Middletown, New Jersey
  • Memorial Sloan Kettering Bergen (Consent only) — Montvale, New Jersey
  • Memorial Sloan Kettering Suffolk - Commack (Consent only) — Commack, New York
  • Memorial Sloan Kettering Westchester (Consent only) — Harrison, New York
  • Memorial Sloan Kettering Nassau (All protocol activities) — Rockville Centre, New York

📞 Contact the Study Coordinator

Phone: (212) 639-2446

Email: canciom@mskcc.org

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 ↗