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Peripheral Blood Stem Cell Transplantation From Family Haploidentical Donors in Patients With Myelodysplastic Syndrome and Acute Leukemia Under Primary Prophylaxis With Posaconazole

A Phase II Trial of Allogeneic Peripheral Blood Stem Cell Transplantation From Family Haploidentical Donors in Patients With Myelodysplastic Syndrome and Acute Leukemia Under Primary Antifungal Prophylaxis With Posaconazole.

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03434704
Acronym
SIR-POSA
Enrollment
10
Registered
2018-02-15
Start date
2018-06-18
Completion date
2019-10-13
Last updated
2022-07-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Transplant-Related Hematologic Malignancy, Leukemia, Acute, Myelodysplastic Syndromes, Graft Vs Host Disease, Fungal Infection

Brief summary

SIR-POSA is a phase II trial of peripheral blood stem cell (PBSC) transplantation from a partially compatible family (Haplo) donor in patients with a blood tumor (myelodysplastic syndrome (MDS) and acute leukemia) treated for the prevention of primary fungal infections with posaconazole. The aim is evaluate the composite end-point graft-versus-host disease-free, relapse-free survival (GRFS) in these patients and evaluate the feasibility and efficacy of posaconazole oral tablets as primary antifungal prophylaxis.

Interventions

DRUGConditioning treatment Thiotepa-Treosulfan-Fludarabine

Thiotepa iv 5 mg/kg/bid (total dose TD 10 mg/kg) day -3,-2; Treosulfan iv 14g/mq/day (TD 42 g/mq) as a single daily dose day -6, -5, -4; Fludarabine iv 30 mg/m2 (TD 150 mg/m2) day -6, -5, -4, -3, -2. Thiotepa TD 5 mg/kg and treosulfan TD 36 g/mq dose reduction according to age \> 65 years.

PROCEDUREPBSC graft

(target 4-8 × 106 CD34+ cells/kg patient body weight)

Sirolimus orally, monitored two times a week to maintain a target therapeutic plasma level of 8-15 ng/ml from day +5. Mycophenolate 15 mg/kg bid i.v. or per os day +5 through +28. Cyclophosphamide 50 mg/kg i.v. day +3+4. Mesna: \>80% of the cyclophosphamide dose in 3 divided doses from day +3 daily through day +5.

DRUGPrimary antifungal prophylaxis

Posaconazole delayed-release tablet \[available in 100 mg tablets\]: 300 mg twice daily on the first day followed by a maintenance dose of 300 mg once a day, starting on the day 0 to day 85.

Sponsors

Ciceri Fabio
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Diagnosis of myelodysplastic syndromes or acute leukemia * Activation of an alternative donor search by the Italian Bone Marrow Donor Registry (IBMDR) with absence of a 10/10 Human Leukocyte Antigens (HLA) matched unrelated donor * Age \>18 * Unavailability of a HLA-matched related donor (MRD) * Performance status : Eastern Cooperative Oncology Group (ECOG) \<3 * Written and signed informed consent * Life expectancy not severely limited by concomitant illness.

Exclusion criteria

* Women of child-bearing potential who do not agree to abstinence or, if sexually active, do not agree to the use of highly effective method of birth control such as condoms, implants, injectables, combined oral contraceptives, intrauterine devices (IUDs), vasectomised partner on treatment and for at least 6 months thereafter. * Pregnant or nursing (lactating) women. * Known allergies, hypersensitivity, or intolerance to any experimental drugs. * Any active, uncontrolled infection.

Design outcomes

Primary

MeasureTime frameDescription
Graft-versus-host disease-free, relapse-free survival (GRFS)2 yearsGRFS events is defined as the first event among grade III-IV acute Graft vs. Host Disease (GVHD), severe chronic GVHD, relapse and death from any cause

Secondary

MeasureTime frameDescription
Efficacy of antifungal prophylaxis strategy85 days after transplantationThe rate of proven, probable and possible invasive fungal diseases documented within the first 85 days after transplantation

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026