Interleukin-1 inhibition to improve the response of myeloproliferative neoplasms resistant to cytoreductive treatment

2025-523921-17-00 Protocol 29BRC25.0416 Therapeutic exploratory (Phase II) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 5 sites · Protocol 29BRC25.0416

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Authorised, recruitment pending
Participants planned 50
Countries 1
Sites 5

myeloproliferative neoplasms

To demonstrate a decrease in serum calprotectin levels at 3 months in the anakinra arm compared with the standard of care.

Key facts

Sponsor
Centre Hospitalier Regional Et Universitaire De Brest
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Hemic and Lymphatic Diseases [C15]
Decision date (initial)
2026-07-02
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Therapy

To demonstrate a decrease in serum calprotectin levels at 3 months in the anakinra arm compared with the standard of care.

Secondary objectives 9

  1. - To determine the proportion of patients improving their level of clinical response to treatment.
  2. - To describe changes in hematological parameters during follow up
  3. - To assess changes in symptom severity associated with the disease over time.
  4. - To describe treatment-related adverse events at 1, 3 and 6 months
  5. - To assess adherence to treatment regimen
  6. - To assess improvement in quality of life at 3 and 6 months
  7. - To assess improvement in the inflammatory biological profile (cytokines) at 3 and 6 months
  8. - To assess reduction in the allele burden of the driver mutation at 3 and 6 months
  9. - To assess reduction in fibrosis markers (circulating CD34+ cells) at 3 and 6 months

Conditions and MedDRA coding

myeloproliferative neoplasms

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 4

  1. - Diagnosis of MPN: PV, ET, or PMF according to WHO criteria
  2. - Stable cytoreductive therapy for at least 6 months
  3. - Incomplete hematologic response according to ELN criteria, excluding bone marrow, OR complete hematologic response with anemia in ET, OR persistence of general clinical symptoms (fever, night sweats, pruritus, fatigue > 5/10 on VAS)
  4. - Adult patient capable of providing informed consent

Exclusion criteria 11

  1. - Recurrent or poorly controlled infections
  2. - Thrombocytopenia < 100 G/L
  3. - Neutropenia < 1 G/L
  4. - Hypersensitivity to the active substance, any excipients, or proteins derived from Escherichia coli
  5. - Concomitant immunosuppressive therapy
  6. - Refusal to participate
  7. - Patient under legal protection (guardianship, curatorship, etc.)
  8. - Patients unable to consent.
  9. - Pregnant or breastfeeding women.
  10. - Lack of understanding of questionnaires or inability to follow up.
  11. - Women of childbearing potential unwilling to use appropriate contraception.

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Baseline and 3-month serum calprotectin levels.

Secondary endpoints 9

  1. - Improvement (yes/no) of the response statusresponse status (according to ELN criteria) between baseline-M3, baseline-M6, M3-M6
  2. - hematological parameters (e.g., hemoglobin, hematocrit, white blood cell count, platelet count) at baseline, 3 and 6 months..
  3. - Patient-reported symptom severity over the previous 4 weeks assessed using a 10-point Visual Analog Scale (VAS) for pruritus, fever, and night sweats at baseline, 3 and 6 months.
  4. - Treatment-related adverse events (type and number)
  5. - Daily self-reported treatment intake (Yes/No) recorded in the patient diary over the 3-month period
  6. - EORTC QLQ-C30 score at baseline, 3 and 6 months
  7. - Multiplex assay of inflammatory cytokines at baseline, 3 and 6 months
  8. - Quantification of JAK2V617F, CALR exon 9, or MPL W515 at baseline, 3 and 6 months
  9. - Measurement of circulating CD34+ cells at baseline, 3 and 6 months

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

Kineret 100 mg/0.67 ml solution for injection in pre-filled syringe.

PRD1778560 · Product

Active substance
Anakinra
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INJECTION
Max daily dose
100 mg milligram(s)
Max total dose
9 g gram(s)
Max treatment duration
3 Month(s)
Authorisation status
Authorised
ATC code
L04AC03 — -
Marketing authorisation
EU/1/02/203/006
MA holder
SWEDISH ORPHAN BIOVITRUM AB (PUBL)
MA country
EU
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Centre Hospitalier Regional Et Universitaire De Brest

Sponsor organisation
Centre Hospitalier Regional Et Universitaire De Brest
Address
2 Avenue Marechal Foch
City
Brest
Postcode
29200
Country
France

Scientific contact point

Organisation
Centre Hospitalier Regional Et Universitaire De Brest
Contact name
DOLOU Julien

Public contact point

Organisation
Centre Hospitalier Regional Et Universitaire De Brest
Contact name
DOLOU Julien

Locations

1 EU/EEA country · 5 investigational sites

By country

CountryMS statusPlanned subjectsSites
France Authorised, recruitment pending 50 5
Rest of world 0

Investigational sites

France

5 sites · Authorised, recruitment pending
Hopital Saint Louis
Investigation et pharmacologie clinique - hématologie, 1 Avenue Claude Vellefaux, 75010, Paris
Centre Hospitalier Regional Universitaire De Tours
Hématologie et thérapie cellulaire, 2 Boulevard Tonnelle, 37000, Tours
Centre Hospitalier Des Pays De Morlaix
Onco-Hématologie, 15 Rue De Kersaint Gilly, Bp 97237, Morlaix
Centre Hospitalier Regional Et Universitaire De Brest
Hématologie, Boulevard Tanguy Prigent, 29200, Brest
Centre Hospitalier Regional D'Angers
Maladies du sang, 4 Rue Larrey, 49100, Angers

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 8 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol_2025-523921-17-00 1.1
Protocol (for publication) D4_Patient Compliance Log 1
Recruitment arrangements (for publication) K1_Recruitment arrangements 1.0
Subject information and informed consent form (for publication) L1_SIS and ICF Subjects 1.1
Summary of Product Characteristics (SmPC) (for publication) E2_Addendum_SmPC_INTEREST 1
Summary of Product Characteristics (SmPC) (for publication) E2_SmPC KINERET 1
Synopsis of the protocol (for publication) D1_Protocol Synopsis EN_2025-523921-17-00 1.1
Synopsis of the protocol (for publication) D1_Protocol Synopsis FR_2025-523921-17-00 1.1

Application history

1 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2026-03-16 France Acceptable
2026-06-08
2026-07-02