A study to evaluate the safety and efficacy of oral decitabine plus ivosidenib in newly diagnosed adult patients with acute myeloid leukemia older than 60 years and/or inelegible for standard induction chemotherapy

2025-523238-17-00 Protocol DECISIVO Therapeutic exploratory (Phase II) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 15 sites · Protocol DECISIVO

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Authorised, recruitment pending
Participants planned 50
Countries 1
Sites 15

Acute myeloid leukemia

To evaluate safety and efficacy (CR/CRi rate) of IVO in combination with oral decitabine, in treatment naïve subjects equal or older than 60 years with acute myeloid leukemia (AML) and IDH1 mutation (or older than 18 with comorbidities precluding an intensive approach with IDH1 mutation).

Key facts

Sponsor
Fundacion PETHEMA
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Neoplasms [C04]
Decision date (initial)
2026-02-19
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No
Funding sources
Otsuka Pharmaceutical S.A. · Servier Affires Médicales

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Safety

To evaluate safety and efficacy (CR/CRi rate) of IVO in combination with oral decitabine, in treatment naïve subjects equal or older than 60 years with acute myeloid leukemia (AML) and IDH1 mutation (or older than 18 with comorbidities precluding an intensive approach with IDH1 mutation).

Secondary objectives 11

  1. To analyze overall survival (OS) and compare with a matched historical control cohort
  2. To evaluate event-free survival (EFS) and compare with a matched historical control cohort
  3. To evaluate composite complete remission (CR or CRi) after 2, 3 and 6 cycles, and compare with a matched historical control cohort
  4. To evaluate global health status/quality of life (GHS/QoL) based on patient reported outcome (PRO) assessments.
  5. To evaluate the impact on remaining subscales/items from the EORTC QLQ-C30 and EQ-5D-5L.
  6. To assess the cumulative incidence of relapse and compare with a matched historical control cohort
  7. To assess the overall hematologic and non-hematologic toxicity of experimental regimen
  8. To evaluate the impact on the use of medical resources (ie, transfusions, duration of hospitalization)
  9. To evaluate the quality of CR (by study of minimal residual disease percentages in the bone marrow using multiparametric flow cytometry and NGS)
  10. To evaluate early mortality (first 60 days)
  11. Exploratory: to assess MRD and clonal suppression by single cell analyses

Conditions and MedDRA coding

Acute myeloid leukemia

VersionLevelCodeTermSystem organ class
21.1 PT 10000880 Acute myeloid leukaemia 100000004864

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 12

  1. Morphological diagnosis of AML (WHO criteria 2022)
  2. Newly diagnosed AML
  3. IDH1 R132 mutations (centrally assessed by PCR and NGS). A patient will be allowed to be included with local result after approval of the medical monitor
  4. Subject must have an Eastern Cooperative Oncology Group (ECOG) Performance status of 0 to 2 if ≥ 60 years of age, or 0 to 3 if ≥ 18 to 60 years
  5. Age ≥ 18 years with comorbidities contraindicating intensive chemotherapy; or age ≥ 60 years
  6. Patients <70 years, with favorable risk AML according to ELN will be included only if they are not candidates to standard treatment with intensive chemotherapy
  7. Adequate renal function as demonstrated by a creatinine clearance ≥ 25 mL/min (calculated by the Cockcroft Gault formula)
  8. Adequate liver function as demonstrated by: aspartate aminotransferase (AST) ≤ 5.0 × ULN, alanine aminotransferase (ALT) ≤ 5.0 × ULN, bilirubin ≤ 2.5 × ULN (unless considered to be due to leukemic disease)
  9. Subject has a white blood cell count < 30 × 109/L (Hydroxyurea is permitted to meet this criterion)
  10. Female subjects must be either postmenopausal OR permanently surgical sterile (bilateral oophorectomy, bilateral salpingectomy or hysterectomy) OR Women of Childbearing Potential (WOCBP) practicing at least one protocol specified method of birth control. Female subjects of childbearing potential must have negative results for pregnancy test performed
  11. Male subjects who are sexually active, must agree, from Study Day 1 through at least 90 days after the last dose of study drug, to practice the protocol specified contraception
  12. Subject must voluntarily sign and date an informed consent, approved by an Independent Ethics Committee (IEC)/Institutional Review Board (IRB), prior to the initiation of any screening or study specific procedures

Exclusion criteria 13

  1. Subject has history of myeloproliferative neoplasm [MPN] with BCR-ABL1 translocation and AML with BCR-ABL1 translocation
  2. Prior therapy for AML (except hydroxiurea)
  3. Genetic diagnosis of acute promyelocytic leukemia
  4. Subject is known to be positive for HIV (HIV testing is not required)
  5. Subject is known to be positive for hepatitis B or C infection with the exception of those with an undetectable viral load within 3 months. (Hepatitis B or C testing is not required)
  6. Subject has chronic respiratory disease that requires continuous oxygen, or significant history of renal, neurologic, psychiatric, endocrinologic, metabolic, immunologic, hepatic, cardiovascular disease, any other medical condition or known hypersensitivity to any of the study medications including excipients that in the opinion of the investigator would adversely affect his/her participating in this study
  7. Any severe uncontrolled systemic infection
  8. Subject has a history of other malignancies within 1 year prior to study entry which is not controlled and/or requiring active therapy which may compromise the administration of IVO and oral decitabine
  9. Creatinine clearance <25 mL/min (calculated by the Cockcroft-Gault formula)
  10. Inadequate liver function as demonstrated by AST or ALT > 5.0 × ULN, or bilirubin > 2.5 × ULN (unless considered to be due to leukemic disease)
  11. Subject has a white blood cell count > 30 × 109/L that is not controlled using hydrea or 1 gr/sqm/day per 1 day of cytarabine
  12. Contraindications for IVO or oral decitabine according to the SmPC
  13. Patient has a heart rate-corrected QT interval using Fridericia’s method QT for corrected heart rate (QTcF) ≥450 msec or any other factor that increases the risk of QT prolongation or arrhythmic events (e.g., hypokalemia, family history of long QT interval syndrome). Patients with prolonged QTcF interval in the setting of bundle branch block may participate in the trial

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Complete response (CR)/Immunophenotipic complete response (CRi), Safety

Secondary endpoints 1

  1. Overall survival (OS), Event-free survival (EFS)

Investigational products

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

Test 2

Inaqovi 35 mg/100 mg film-coated tablets

PRD10840060 · Product

Active substance
Decitabine
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL
Max daily dose
135 mg milligram(s)
Max total dose
24 g gram(s)
Max treatment duration
36 Month(s)
Authorisation status
Authorised
ATC code
L01BC — PYRIMIDINE ANALOGUES
Marketing authorisation
EU/1/23/1756/001
MA holder
OTSUKA PHARMACEUTICAL NETHERLANDS B.V.
MA country
EU
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Tibsovo 250 mg film-coated tablets

PRD10392230 · Product

Active substance
Ivosidenib
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL
Max daily dose
500 mg milligram(s)
Max total dose
504 g gram(s)
Max treatment duration
36 Month(s)
Authorisation status
Authorised
ATC code
L01XX62 — -
Marketing authorisation
EU/1/23/1728/001
MA holder
LES LABORATOIRES SERVIER (SURESNES)
MA country
EU
Paediatric formulation
No
Orphan designation
Yes
Orphan designation number
EU/1/23/1728
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Fundacion PETHEMA

Sponsor organisation
Fundacion PETHEMA
Address
Oficinas 3 4 5, Calle De Santa Balbina 2 Calle De Santa Balbina 2
City
Madrid
Postcode
28023
Country
Spain

Scientific contact point

Organisation
Fundacion PETHEMA
Contact name
Alfonso Santiago

Public contact point

Organisation
Fundacion PETHEMA
Contact name
Alfonso Santiago

Third parties 1

OrganisationCity, countryDuties
Cabyc S.L.
ORG-100047599
San Sebastian De Los Reyes, Spain Code 8

Locations

1 EU/EEA country · 15 investigational sites

By country

CountryMS statusPlanned subjectsSites
Spain Authorised, recruitment pending 50 15
Rest of world 0

Investigational sites

Spain

15 sites · Authorised, recruitment pending
Hospital Universitario Reina Sofia
Hematología, Avenida Menendez Pidal S/n, 14004, Cordoba
Hospital General Universitario Dr. Balmis
Hematología, Avinguda Del Pintor Baeza 12, 03010, Alicante
Hospital Universitario De Canarias
Hematología, Carretera Ofra S/N, 38320, San Cristobal De La Laguna
Hospital Universitario Dr Peset Aleixandre
Hematología, Avinguda De Gaspar Aguilar 90, 46017, Valencia
Hospital Universitario De Burgos
Hematología, Avenida De Las Islas Baleares 3, 09006, Burgos
Hospital Universitario Fundacion Jimenez Diaz
Hematología, Avenida De Los Reyes Catolicos 2, 28040, Madrid
Hospital Universitario Y Politecnico La Fe
Hematología, Avenida Fernando Abril Martorell 106, 46026, Valencia
Hospital Universitario 12 De Octubre
Hematología, Avenida De Cordoba Sn, 28041, Madrid
Hospital Universitario Virgen De La Victoria
Hematología, Campus De Teatinos Sn, Puerto De La Torre, Malaga
Hospital San Pedro De Alcantara
Hematología, Avenida De Pablo Naranjo Porras S/n, 10002, Caceres
Hospital Universitario Lucus Augusti
Hematología, Rua Dr. Ulises Romero 1, 27003, Lugo
Hospital General Universitario De Albacete
Hematología, Calle Hermanos Falco 37, 02006, Albacete
El Hospital Universitario De Gran Canaria Dr. Negrin
Hematología, Barranco De La Ballena S N, 35010, Las Palmas De Gran Canaria
University Hospital Virgen Del Rocio S.L.
Hematología, Avenida De Manuel Siurot S/n, 41013, Sevilla
Hospital Universitario Ramon Y Cajal
Hematología, Carretera Del Colmenar Viejo Km 9 100, Por El Pardo, Madrid

Results and documents

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

Documents 9 files

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

TypeTitleVersion
Protocol (for publication) D1_Protocol 2025-523238-17-00_Redacted_Original_07Jul2025 Original
Protocol (for publication) D1_Protocol 2025-523238-17-00_V1-0_Redacted_21Jan2026 1.0
Recruitment arrangements (for publication) K1_Recruitment procedure V1-0_22Jul2025 1
Subject information and informed consent form (for publication) L1_SIS-ICF_Principal v1-0_05Aug2025 1.0
Summary of Product Characteristics (SmPC) (for publication) E2_SmPC_Inaqovi 1
Summary of Product Characteristics (SmPC) (for publication) E2_SmPC_Tibsovo 1
Synopsis of the protocol (for publication) D1_Protocol synopsis 2025-523238-17-00_ES_Original_Redacted_07Jul2025 Original
Synopsis of the protocol (for publication) D1_Protocol synopsis 2025-523238-17-00_ES_V1-0_21Jan2026 1.0
Synopsis of the protocol (for publication) D1_Protocol synopsis 2025-523238-17-00_ES_V1-0_Redacted_21Jan2026 1.0

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-10-27 Spain Acceptable
2026-02-18
2026-02-19