Phase 1 Leukaemia Trial, Recruiting NCT03802695 Sponsor: Orca Biosystems, Inc. Condition: Leukaemia
Back to Leukaemia

Phase 1 Leukaemia Trial, Recruiting

NCT03802695
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 aged 12 to 78 years (or 12 to 65 years, depending on the type of transplant and donor match — confirm with trial site)
  • People diagnosed with acute myeloid leukemia, acute lymphoblastic leukemia, mixed phenotype leukemia, or high/very high risk myelodysplastic syndrome (MDS), where the disease is either in full remission or has a low level of abnormal cells in the bone marrow (no more than 10%)
  • People for whom a stem cell transplant from a donor (called an allogeneic transplant) has been recommended by their doctor
  • People who have a matched or partially matched donor — either related or unrelated — or a half-matched (haploidentical) related donor
  • People whose kidneys are working above a minimum level of function (the specific threshold depends on the type of transplant — confirm with trial site)
  • People whose heart is pumping adequately (at least 45% function for full-intensity transplant, or at least 40% for reduced-intensity transplant)
  • People whose lungs are functioning above a minimum threshold (at least 50% for full-intensity transplant, or at least 40% for reduced-intensity transplant)
  • People whose liver function blood tests are within acceptable ranges (the specific limits depend on the type of transplant — confirm with trial site)
  • People enrolling in the reduced-intensity transplant arms must be assessed by the lead doctor as being unsuitable for a full-intensity transplant

Who may not be able to join:

  • People who have previously had a donor stem cell transplant
  • People currently taking corticosteroids (steroids) or other immune-suppressing medicines, with some exceptions — low-dose steroids (10 mg per day or less) or topical steroids may be allowed, as may treatments specifically approved for their blood condition
  • People whose transplant plan includes a procedure called donor lymphocyte infusion (DLI)
  • People whose transplant plan includes certain methods of removing or reducing T cells from the donor cells (such as post-transplant cyclophosphamide or alemtuzumab)
  • People who have antibodies in their blood that react against their donor's tissue type (confirm with trial site)
  • People with a low performance/fitness score below the required threshold (the minimum score depends on the type of transplant — confirm with trial site)
  • People with a high level of health complications as measured by a transplant-specific scoring tool, above the allowed limit for their transplant type (confirm with trial site)
  • People with an active, uncontrolled bacterial, viral, or fungal infection that is not improving with treatment at the time of enrolment
  • People who test positive for HIV-1 or HIV-2, HTLV-1 or HTLV-2, active Hepatitis B, or Hepatitis C
  • People with an uncontrolled autoimmune disease that currently requires immune-suppressing treatment
  • People who have had another cancer within the past year, or have a current active cancer — with some possible exceptions for certain slow-growing blood cancers under monitoring only, subject to approval (confirm with trial site)
  • People with a history of myelofibrosis (scarring of the bone marrow), whether inherited or acquired
  • People who are pregnant or breastfeeding

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 9 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: James S McClellan, MD, PhD, Orca Biosystems, Inc.

Phone: 650-246-9601

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
Orca Biosystems, Inc.
Registry
ClinicalTrials.gov
Start date
8 April 2019
Est. completion
1 December 2027

Where this trial is recruiting

🇺🇸 United States

Primary endpoints

Dose Limiting Toxicities through Day +28 (dose escalation); Primary Graft failure through Day +28 (dose expansion)

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: 9 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