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Recruiting Phase 1 NCT03802695

NCT03802695 A Phase 1 Study of Orca-Q in Recipients Undergoing Allogeneic Transplantation for Hematologic Malignancies

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Clinical Trial Summary
NCT ID NCT03802695
Status Recruiting
Phase Phase 1
Sponsor Orca Biosystems, Inc.
Condition Acute Myeloid Leukemia
Study Type INTERVENTIONAL
Enrollment 300 participants
Start Date 2019-04-08
Primary Completion 2027-12

Eligibility & Interventions

Sex All sexes
Min Age 12 Years
Max Age 78 Years
Study Type INTERVENTIONAL
Interventions
OrcaGraft (Orca-Q)

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.

This trial targets 300 participants in total. It began in 2019-04-08 with a primary completion date of 2027-12.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This study will evaluate the safety, tolerability, and efficacy of engineered donor grafts ("OrcaGraft"/"Orca-Q") in participants undergoing allogeneic hematopoietic cell transplant (alloHCT) transplantation for hematologic malignancies.

Eligibility Criteria

Key Inclusion Criteria: 1. Age at the time of enrollment: 1. For MAC with fully matched donor (Arm A with 8/8 donor and Arm C) and NMA/RIC: Age ≥ 12 and ≤ 78 years 2. For MAC with mismatched donors (Arm A with 7/8 donor and Arm B): Age ≥ 12 and ≤ 65 years 2. Diagnosed acute myeloid, lymphoblastic or mixed phenotype leukemia, or high or very high risk myelodysplastic syndrome (MDS) either in complete remission (CR) or with ≤ 10 percent of blast cells in bone marrow (BM) 3. Indicated for allogeneic hematopoietic stem cell transplant (alloHCT) 4. Matched to a 8/8 or 7/8 related or unrelated donor, or to a related haploidentical donor 5. Estimated glomerular filtration rate (eGFR) \> 50 mL/minute (MAC with tacrolimus) or \> 30 mL/minute (NMA/RIC or MAC without tacrolimus) 6. Cardiac parameters: Cardiac ejection fraction ≥ 45 percent (MAC) or ≥ 40 percent (NMA/RIC) 7. Diffusing capacity of the lung for carbon monoxide (DLCO) (adjusted for hemoglobin) ≥ 50 percent for MAC or ≥ 40 percent for NMA/RIC 8. Liver function: Total bilirubin \< 1.5 times upper limit of normal (ULN) (MAC) or \< 3 times ULN (NMA/RIC); alanine transaminase (ALT)/aspartate transaminase (AST) \< 3 times ULN (MAC) or \< 5 times ULN (NMA/RIC) 9. Participants enrolling on NMA/RIC-alloHCT arms must be deemed unfit for a myeloablative alloHCT per assessment of the principal investigator (PI) Key Exclusion Criteria: 1. Prior alloHCT 2. Currently receiving corticosteroids or other immunosuppressive therapy except for approved disease-specific therapy for the patient's underlying hematologic malignancy. Topical corticosteroids or oral systemic corticosteroid doses less than or equal to 10 mg/day are allowed 3. Planned donor lymphocyte infusion (DLI) 4. Planned pharmaceutical in vivo or ex vivo T cell depletion, e.g., post-transplant cyclophosphamide (Cy) or alemtuzumab 5. Positive anti-donor HLA antibodies against a mismatched allele in the selected donor 6. Low performance score: For MAC: Karnofsky Performance Score (KPS) \< 70 percent, For NMA/RIC: \<60 percent 7. High HCT-specific Comorbidity Index (HCT-CI): For MAC \> 4, For NMA/RIC \>6 8. Uncontrolled bacterial, viral or fungal infections (currently taking antimicrobial therapy and with progression or no clinical improvement) at time of enrollment 9. Seropositive for human immunodeficiency virus (HIV)-1 or -2, human T-lymphotropic virus (HTLV)-1 or -2 or Hepatitis B surface antigen (HbsAg) or anti-Hepatitis C virus (HCV) antibody (Ab) 10. Any uncontrolled autoimmune disease requiring active immunosuppressive treatment 11. Concurrent malignancies or active disease within 1 year, except non-melanoma skin cancers that have been curatively resected. Patients with concurrent indolent hematologic malignancies that do not require active treatment and are under active surveillance only (such as CLL, low-grade lymphomas, smoldering MM, MZL) may be included with the approval of Medical Monitor 12. History of idiopathic or secondary myelofibrosis 13. Women who are pregnant or breastfeeding

Contact & Investigator

Central Contact

Tamara Zharkevich, MD, PhD

✉ info@orcabiosystems.com

📞 650-246-9601

Principal Investigator

James S McClellan, MD, PhD

STUDY DIRECTOR

Orca Biosystems, Inc.

Frequently Asked Questions

Who can join the NCT03802695 clinical trial?

This trial is open to participants of all sexes, aged 12 Years or older, up to 78 Years, studying Acute Myeloid Leukemia. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT03802695 trial and what does that mean for participants?

Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.

Is NCT03802695 currently recruiting?

Yes, NCT03802695 is actively recruiting participants. Contact the research team at info@orcabiosystems.com for enrollment information.

Where is the NCT03802695 trial being conducted?

This trial is being conducted at Duarte, United States, Sacramento, United States, Stanford, United States, Tampa, United States and 8 additional locations.

Who is sponsoring the NCT03802695 clinical trial?

NCT03802695 is sponsored by Orca Biosystems, Inc.. The principal investigator is James S McClellan, MD, PhD at Orca Biosystems, Inc.. The trial plans to enroll 300 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology