A Study of Siremadlin in Combination With Venetoclax Plus Azacitidine in Adult Participants With Acute Myeloid Leukemia (AML) Who Are Ineligible for Chemotherapy.

NCT ID: NCT05155709

Last Updated: 2025-10-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE1

Total Enrollment

14 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-05-17

Study Completion Date

2024-04-17

Brief Summary

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A study of siremadlin in combination with venetoclax plus azacitidine in adult participants with AML who are ineligible for chemotherapy.

The primary purpose of this study was to assess whether siremadlin in combination with venetoclax plus azacitidine can enhance the clinical response in unfit AML patients without unacceptable levels of treatment-emergent toxicities.

Detailed Description

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The recommended dose of siremadlin in combination with venetoclax plus azacitidine will be determined to be explored further in the expansion phase and the preliminary efficacy in achieving Complete Remission (CR) will be evaluated in participants who responded sub-optimally to first-line venetoclax plus azacitidine treatment.

The study was planned to be conducted in two parts. The primary purpose of Part 1 (Safety Run- in) was to rule out excessive toxicity of siremadlin when administered in combination with venetoclax plus azacitidine while the primary purpose of Part 2 (Expansion) was to evaluate the preliminary efficacy of siremadlin when combined with venetoclax plus azacitidine in the respective patient population.

The study treatment (siremadlin in combination with venetoclax plus azacitidine) is administered in cycles with a planned duration of 28 days and will continue until the participants experience disease progression/relapse or unacceptable toxicity.

The initial enrollment plan and safety review was as follow:

* In the Safety run-in part, 9-15 participants were planned to be enrolled in each arm. Approximately 3-6 participants were planned to be enrolled at the starting dose level of siremadlin in combination with venetoclax plus azacitidine in both arms independently. Provided the starting dose level is determined to be safe, approximately 6-9 additional participants were planned to be enrolled at dose level +1. Safety review meetings were planned to take place involving participating investigators and the Sponsor Team to make decisions regarding siremadlin dose and determine the recommended dose for expansion.
* Approximately 26 patients were planned to be treated at the recommended dose in the expansion part.

In the safety run-(Part 1) 27 sites were open for recruitment with 28 patients screened and 14 patients enrolled.

After enrolling 14 patients (6 patients in Arm 1 and 8 patients in Arm 2), Novartis took the decision to put the enrollment in permanent halt and terminate the siremadlin program. For that reason, the enrollment in Part 2 (expansion phase) will not be open. The Novartis decision was not driven by any safety concerns.

Conditions

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Acute Myeloid Leukemia

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Arm 1: Unfit adult participants with AML who responded sub-optimally to standard of care

Unfit adult participants with AML who responded sub-optimally to at least 2 and not more than 4 cycles ( 1 cycle=28 days) of first-line venetoclax plus azacitidine therapy

Group Type EXPERIMENTAL

siremadlin

Intervention Type DRUG

Siremadlin is a capsule taken orally once a day (QD) and comes in 10 mg, 20 mg and 30 mg strengths

venetoclax

Intervention Type DRUG

Venetoclax is a tablet taken orally once a day (QD) and comes in 10 mg, 50 mg and 100 mg strengths.

azacitidine

Intervention Type DRUG

Azacitidine is a powder for suspension for injection or powder for solution for infusion taken intravenously or subcutaneously according to standard local clinical practice

Arm 2: Newly diagnosed unfit adult participants with high-risk AML

Unfit adult participants with newly diagnosed AML and with adverse genetic risk stratification (according to ELN 2022)(Except TP53 mutation positive participants).

Group Type EXPERIMENTAL

siremadlin

Intervention Type DRUG

Siremadlin is a capsule taken orally once a day (QD) and comes in 10 mg, 20 mg and 30 mg strengths

venetoclax

Intervention Type DRUG

Venetoclax is a tablet taken orally once a day (QD) and comes in 10 mg, 50 mg and 100 mg strengths.

azacitidine

Intervention Type DRUG

Azacitidine is a powder for suspension for injection or powder for solution for infusion taken intravenously or subcutaneously according to standard local clinical practice

Interventions

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siremadlin

Siremadlin is a capsule taken orally once a day (QD) and comes in 10 mg, 20 mg and 30 mg strengths

Intervention Type DRUG

venetoclax

Venetoclax is a tablet taken orally once a day (QD) and comes in 10 mg, 50 mg and 100 mg strengths.

Intervention Type DRUG

azacitidine

Azacitidine is a powder for suspension for injection or powder for solution for infusion taken intravenously or subcutaneously according to standard local clinical practice

Intervention Type DRUG

Other Intervention Names

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HDM201

Eligibility Criteria

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Inclusion Criteria

\- Age at the date of signing the informed consent form (ICF): Arm 1 and Arm 2: ≥ 18 years

\- Participants diagnosed with AML based on WHO 2016 classification (Arber et al 2016) who are ineligible for standard induction chemotherapy and: Arm 1 : have received at least 2 cycles and not more than 4 cycles of first-line venetoclax plus azacitidine treatment and have not achieved a CR, CRi, CRh or MLFS.

Arm 2 : newly diagnosed AML with adverse genetic risk stratification (according to ELN 2022) (except TP53 mutation positive participants).

* Participant (in both arms) must be considered ineligible for standard of care intensive induction chemotherapy defined by the following:

* 75 years of age; OR
* 18 to 74 years of age with at least one of the following co-morbidities: Eastern Cooperative Oncology Group (ECOG) Performance Status of 2 or 3; Cardiac history of congestive heart failure (CHF) requiring treatment or Ejection Fraction ≤ 50% or chronic stable angina; DLCO ≤ 65% or FEV1 ≤ 65%.
* Participants must have an ECOG performance status:

0 to 2 for participants ≥ 75 years of age. OR 0 to 3 for participants ≥ 18 to 74 years of age.
* WBC \< 25x109/L
* AST and ALT ≤ 3 × ULN
* Estimated Glomerular Filtration Rate (eGFR)≥ 60 mL/min/1.73 m2

Exclusion Criteria

* Prior exposure to MDM2-inhibitor therapy at any time.
* Participants with TP53 mutation positive.
* Participants with del17p.
* Participants with AML-M3 / APL (Acute promyelocytic leukemia) with PML-RARA (Promyelocytic leukemia/retinoic acid receptor alpha) or with AML secondary to Down's syndrome.
* Participants treated with FLT3 inhibitors for AML indication are not eligible.
* Participants who require treatment with moderate or strong CYP3A4 inducers within 14 days prior to starting study treatment, or are expected to receive moderate or strong CYP3A4 inducers during the entire study
* Participants who require treatment with substrates of CYP3A4/5 with a narrow therapeutic index.
Minimum Eligible Age

18 Years

Maximum Eligible Age

99 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Novartis Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Novartis Pharmaceuticals

Role: STUDY_DIRECTOR

Novartis Pharmaceuticals

Locations

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Oregon Health Sciences University

Portland, Oregon, United States

Site Status

Texas Oncology Sammons Cancer Center

Dallas, Texas, United States

Site Status

Novartis Investigative Site

Hong Kong, , Hong Kong

Site Status

Novartis Investigative Site

Budapest, , Hungary

Site Status

Novartis Investigative Site

Beersheba, , Israel

Site Status

Novartis Investigative Site

Jerusalem, , Israel

Site Status

Novartis Investigative Site

Bologna, BO, Italy

Site Status

Novartis Investigative Site

Alor Star, Kedah, Malaysia

Site Status

Novartis Investigative Site

Kuala Selangor, , Malaysia

Site Status

Novartis Investigative Site

Izmir, , Turkey (Türkiye)

Site Status

Countries

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United States Hong Kong Hungary Israel Italy Malaysia Turkey (Türkiye)

Related Links

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Other Identifiers

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2021-001165-21

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

CHDM201I12201

Identifier Type: -

Identifier Source: org_study_id

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