A Study of CYP-001 for the Treatment of Steroid-Resistant Acute Graft Versus Host Disease

Cynata Therapeutics

Status and phase: Completed; Phase 1

Conditions: Graft vs Host Disease

Treatments: Biological: Mesenchymoangioblast-derived mesenchymal stem cells

Study type: Interventional

Funder types: Industry

Identifiers

NCT02923375

CYP-GvHD-P1-01

2016-000070-38 (EudraCT Number)

Details and patient eligibility

About

The purpose of this study is to assess the safety, tolerability and efficacy of two infusions of CYP-001 in adults with steroid-resistant GvHD.

Full description

This is a multi-centre, open label, dose escalation study to assess the safety, tolerability and efficacy of two infusions of CYP-001, in adults who have steroid-resistant GvHD.

Participants will receive standard of care treatment throughout the study, according to local procedures. The first eight participants will be enrolled in Cohort A and receive a CYP-001 dose of 1 million cells per kg, up to a maximum dose of 100 million cells, on Day 0 and Day 7. Subject to a safety review of data from Cohort A, an additional eight participants will be enrolled into Cohort B and receive a CYP-001 dose of 2 million cells/kg, up to a maximum dose of 200 million cells, on Day 0 and Day 7. The primary evaluation period concludes for each participant 100 days after the first dose of CYP-001. Participants will have study visits on Days 0, 3, 7, 14, 21, 28, 60 and 100. Subsequently, participants will enter a long term follow-up period, which concludes 2 years after the first dose of CYP-001.

Enrollment: 16 patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Diagnosis using consensus grading with steroid-resistant Grade II-IV acute GvHD, after a haematopoietic stem cell transplant for a haematological disorder.
• Life expectancy of at least one month.
• Agree to have follow-up data collected for two years after their initial dose of CYP-001 (under a separate protocol).

Exclusion criteria

• Pregnant or breastfeeding or plan to become pregnant within three months of receiving their last dose of CYP-001.
• Have received any investigational research agent within 30 days or five half-lives (whichever is longer) prior to the first dose of IMP.
• Known or suspected current alcohol or substance abuse problem.
• Progressive or relapsing haematological malignancy, a current solid tumour, or previous malignant solid tumour that is likely to recur during the period of the study (with the exception of a past history of basal or squamous cell carcinomas).
• Heart failure (NYHA Functional Class II-IV) and/or pulmonary failure.
• Haemodynamically unstable and/or at high risk of cardiovascular events.
• Terminal organ failure.
• Meningitis, pneumonia with hypoxemia, HIV or another severe or uncontrolled systemic infection, which in the opinion of the investigator is likely to impact on the ability of the patient to participate in the trial.

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Sequential Assignment

Masking: None (Open label)

---

16 participants in 2 patient groups

Cohort A

Experimental group

Description:

Mesenchymoangioblast-derived mesenchymal stem cells (CYP-001) at a dose of 1 million cells/kg (up to a maximum of 100 million cells) by IV infusion on two occasions (Day 0 and Day 7)

Treatment:

Biological: Mesenchymoangioblast-derived mesenchymal stem cells

Cohort B

Experimental group

Description:

Mesenchymoangioblast-derived mesenchymal stem cells (CYP-001) at a dose of 2 million cells/kg (up to a maximum of 200 million cells) by IV infusion on two occasions (Day 0 and Day 7)

Treatment:

Biological: Mesenchymoangioblast-derived mesenchymal stem cells