ClinicalTrials.gg
RecruitingNCT07507760DECISIVOUpdated Sep 22, 2026

Oral Decitabine Plus Ivosidenib as First Line for Older/Unfit Adult AML Patients

A Phase 2 interventional study of Decitabine/Cedazuridine 35 Mg-100 Mg ORAL TABLET and Ivosidenib Oral Tablet in Acute Myeloid Leukemia With Gene Mutations, sponsored by PETHEMA Foundation. Recruiting at 20 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-22.

Sponsored by PETHEMA Foundation · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Jun 2026; still recruiting 4 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
50
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn if the combination of oral decitabine plus ivosidenib works to treat naïve adult patients with acute myeloid leukemia (AML) with IDH1 R132 mutation older than 60 years old or those who are older than 18 years old with defined comorbidities that make them not suitable for standard induction therapy. The main objectives of this clinical trial are:

  • Asses the Complete Remission (CR) and Complete Remission with incomplete marrow recovery (CRi) rates of this treatment.
  • Determine the incidence and severity of all adverse events (AEs).

All participants will receive oral ivosidenib and oral decitabine in treatment cycles of 28 days until disease progression, lack of clinical benefit or the end of the study. Patients who achieve CR/CRi will be elegible to receive allogeneic stem cell transplantation.

Read the detailed description

A total of 50 participants will be assigned to the single treatment arm which will have treatment cycles of 28 days with Ivosidenib 500 mg/orally on Days 1-28 plus oral decitabine-cedazuridine (one tablet once daily containing 35 mg decitabine and 100 mg cedazuridine as a fixed-dose combination) on days 1-5.

Hydroxiurea or maximum 1 gram/sqm of cytarabine is allowed to control hyperleukocytosis during the screening period as well as during the first two cycles of induction.

Participants will continue their study treatment until documented disease progression per Investigator assessment, unacceptable toxicity, withdrawal of consent, the subject meets other protocol criteria for discontinuation or study completion (whichever occurs first).

Participants who are considered eligible for an allogeneic stem cell transplant after achieving CR/CRi will perform a pre-transplant visit into the study, collecting MRD stats and characteristics of transplant. They will be allowed to resume ivosidenib after day +60 of transplant. The post-transplant schedule can be administered for up to 2 years. If they do not resume ivosidenib they will perform end of trial visit (and if this is not possible the pre-transplant visit will be considered as en of trial visit).

02

Conditions studied

  • Acute Myeloid Leukemia With Gene Mutations

Keywords

  • AML
  • older adult
  • unfit
  • IDH1 R132 mutation
  • Decitabine
  • Ivosidenib
  • allogeneic stem cell transplant
03

In context

Leukemia, Myeloid, Acute

3,667 studies on the registry are indexed under Leukemia, Myeloid, Acute; 816 are open to participants now.

This study's planned enrollment of 50 is above the median of 40 across 3,005 interventional studies indexed under Leukemia, Myeloid, Acute.

Browse Leukemia, Myeloid, Acute studies →

Lead sponsor

PETHEMA Foundation is the lead sponsor of 107 studies on the registry; 12 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  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 (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.

    • ≥ 60 years of age;
    • or ≥ 18 to 60 with at least one of the following co-morbidities:

      • ECOG Performance Status of 2 or 3;
      • Cardiac history of CHF requiring treatment or ≤ 55% or chronic stable angina;
      • DLCO ≤ 65% or ≤ 65% or significant history of chronic pulmonary obstructive;
      • ≥ 25 mL/min to \< 50 ml/min
      • Moderate hepatic impairment with total > 1.5 to ≤ 3.0 ×
      • Non active/controlled prior neoplastic disease
      • Any other patient´s comorbidity or disease condition that the physician judges to be incompatible with intensive chemotherapy must be reviewed and approved by the PETHEMA medical monitor before study enrolment (e.g, prior MDS or MPS, high-risk cytogenetics)
  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: (AST) ≤ 5.0 × ULN, alanine aminotransferase (ALT) ≤ 5.0 × ULN, bilirubin ≤ 2.5 × ULN (unless considered to be due to leukemic disease, in which case it should be approved by the PETHEMA medical monitor).
  9. Subject has a white blood cell count \< 30 × 109/L (Hydroxyurea is permitted to meet this criterion)
  10. Female subjects must be either OR permanently surgical sterile (bilateral oophorectomy, bilateral salpingectomy or hysterectomy) OR Women of (WOCBP) practicing at least one protocol specified method of . Female subjects of childbearing potential must have negative results for pregnancy tests performed along the study (screening and every three cycles). A woman is considered of childbearing potential (WOCBP), i.e. fertile, following menarche and until becoming post-menopausal unless permanently sterile. Permanent sterilisation methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. A man is considered fertile after puberty unless permanently sterile by bilateral orchidectomy.
  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 , approved by an Independent Ethics Committee (IEC)/Institutional Review Board (IRB), prior to the initiation of any screening or study specific procedures.

Exclusion criteria

Exclusion Criteria:

  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 testing is not required.)
  5. Subject is known to be positive for 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 to any of the study medications including 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 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. \<25 mL/min (calculated by the Cockcroft-Gault formula).
  10. Inadequate liver function as demonstrated by or ALT > 5.0 × , or > 2.5 × ULN (unless considered to be due to leukemic disease, in which case it should be approved by the PETHEMA medical monitor)
  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. for IVO or oral decitabine according to the SmPC.
  13. Patient has a heart rate- 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.
Terms in these criteria, in plain language(18)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

FEV1

From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
50 participants (estimated)

Study arms

  • Experimental
    Decitabine+Ivosidenib

    Participants will receive treatment cycles of 28 days with Ivosidenib 500 mg/orally on Days 1-28 plus oral decitabine-cedazuridine (one tablet once daily containing 35 mg decitabine and 100 mg cedazuridine as a fixed-dose combination) on days 1-5. Hydroxiurea or maximum 1 gram/sqm of cytarabine is allowed to control hyperleukocytosis during the screening period as well as during the first two cycles of induction. Participants who achieve CR/CRi can be submitted to allogeneic stem cell transplant and will be allowed to resume ivosidenib after day +60 of transplant. The post-transplant schedule can be administered for up to 2 years.

    Drug: Decitabine/Cedazuridine 35 Mg-100 Mg ORAL TABLET · Drug: Ivosidenib Oral Tablet · Drug: Hydroxyurea · Drug: Cytarabine · Procedure: Allogeneic stem cell transplantation

Interventions

  • DrugDecitabine/Cedazuridine 35 Mg-100 Mg ORAL TABLET

    Drug pages: Decitabine · Cedazuridine

    Oral Decitabine (Decitabine/Cedazuridine 35 Mg-100 Mg) will be administerd on Days 1-5 of each treatment cycle

  • Ivosidenib 500 mg/orally on Days 1-28 of each treatment cycle

  • 0.5-6 gram/day orally during the screening period and the two first treatment cycles if hyperleukocytosis at diagnosis

  • Maximum 1 gram/sqm/day during the screening period and the two first treatment cycles if hyperleukocytosis at diagnosis

  • ProcedureAllogeneic stem cell transplantation

    Only for those participants achieving CR/CRi

06

What researchers measure

Primary outcomes

  1. Rate of CR/CRi

    To assess the rates of Complete Remission (CR) and Complete Remission with incomplete marrow recovery (CRi) of participants treated with Ivosidenib plus Decitabine

    Time frame: 3 years

Secondary outcomes

  1. Rate CR/CRi compared to historical cohort

    To evaluate the CR (Complete Remission)/CRi (Complete Remission with incomplete marrow recovery) rates after 2, 3 and 6 cycles of Ivosidenib and oral Decitabine, and compare with a matched historical cohort.

    Time frame: 3 years

  2. OS compared to historical cohort

    To assess OS (overall survival, measured as the number of days from the date of enrollment to the date of death, whatever the cause of death) and compare the median between Ivosidenib with oral Decitabine and a matched historical cohort.

    Time frame: 3 years

  3. EFS compared to historical cohort

    To evaluate EFS (event-free survival, defined as the number of days from enrollment until the date of progressive disease, relapse from CR or CRi, failure to achieve CR or CRi, or death from any cause) and compare with a matched historical control cohort

    Time frame: 3 years

  4. Hematologic and non-hematologic toxicity and AE

    Toxicity and adverse events (AE) will be recorded and evaluated to determine treatment safety. Toxicity will be graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 4.019.

    Time frame: 3 years

  5. Quality of CR

    The quality of the Complete Remission (CR) will measured by the study of minimal residual disease percentages in the bone marrow using multiparametric flow cytometry and Next Generation Sequencing

    Time frame: 3 years

  6. Early mortality

    To evaluate the mortality rate during the first 60 days of treatment

    Time frame: 3 years

07

Study locations

6 of 20 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jun 2026 (actual). Primary completion is estimated for Apr 2029, 34 months after the start.

Of 385 non-industry phase 2 interventional studies under Leukemia, Myeloid, Acute, half reached primary completion within 67 months of starting (the median), counting those still running; a quarter within 40 and three quarters within 108. This study's planned 34 months is below that.

Counting every sponsor, half of 442 studies reached it within 60 months; a quarter within 38 and three quarters within 104.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 27, 2026
First posted
Apr 2, 2026
StartActual
Jun 12, 2026
Primary completionEst.
Apr 2029
CompletionEst.
Apr 2029
Last update
Sep 22, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07507760
Lead sponsor
PETHEMA Foundation
Responsible party
Sponsor
First posted
Apr 2, 2026
Start date
Jun 12, 2026
Primary completion
Apr 2029 (estimated)
Completion
Apr 2029 (estimated)
Last update
Sep 22, 2026

Study contacts

Pau Montesinos
Contact
montesinos_pau@gva.es
+34 96 1244925
Juan José Lahuerta
Contact
jjlahuerta@telefonica.net
Pau Montesinos
study chair · Hospital Universitari i Politèncic La Fe

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Decitabine · Cedazuridine · Ivosidenib

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