Evaluate the Pharmacokinetics of Oral Arsenic Trioxide Solution Under Fasting and Fed Conditions, to Compare Intravenous Arsenic Trioxide, in Acute Promyelocytic Leukemia

November 14, 2025 updated by: SDK Therapeutics, Inc.

A Randomized, Open Label, Single-Centre, Single-Dose, 4-Period, 4-Treatment Cross-over Study to Evaluate the Pharmacokinetics of Oral Arsenic Trioxide Solution (SDK001) Under Fasting and Fed Conditions, to Compare to Intravenous Arsenic Trioxide, and to Evaluate Interaction With Calcium Carbonate in Patients With Acute Promyelocytic Leukemia.

Randomized, Open-Label Study to evaluate the Pharmacokinetics of Oral Arsenic Trioxide Solution (SDK001) under Fasting and Fed Conditions, to Compare to IV Arsenic Trioxide

Study Overview

Study Type

Interventional

Enrollment (Actual)

12

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Hong Kong, Hong Kong
        • The University of Hong Kong-Clinical Trial Centre Phase 1 Centre

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

-Diagnosis of APL characterized by the presence of the t(15;17) translocation or promyelocytic leukemia/retinoic acid receptor alpha gene expression

Exclusion Criteria:

  • Relapsed or refractory APL

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Sequence 1

In this treatment Arm 1, patients will receive one dose of the following interventions one week apart

  • A: IV Arsenic Trioxide under fasted state
  • B: SDK001 under fasted state
  • C: SDK001 under fed state
  • D: SDK001 with calcium carbonate under fasted state
0.15 mg/kg 2-hour IV infusion of ATO administered under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fed state (high fat breakfast) in single dose
0.15 mg/kg SDK001 administered orally with calcium carbonate in tablet form (1g) under fasted state in single dose
Experimental: Sequence 2

In this treatment Arm 2, patients will receive one dose of the following interventions one week apart

  • B: SDK001 under fasted state
  • D: SDK001 with calcium carbonate
  • A: IV Arsenic Trioxide under fasted state
  • C: SDK001 under fed state
0.15 mg/kg 2-hour IV infusion of ATO administered under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fed state (high fat breakfast) in single dose
0.15 mg/kg SDK001 administered orally with calcium carbonate in tablet form (1g) under fasted state in single dose
Experimental: Sequence 3

In this treatment Arm 3, patients will receive one dose of the following interventions one week apart

  • C: SDK001 under fed state
  • A: IV Arsenic Trioxide under fasted state
  • D: SDK001 with calcium carbonate
  • B: SDK001 under fasted state
0.15 mg/kg 2-hour IV infusion of ATO administered under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fed state (high fat breakfast) in single dose
0.15 mg/kg SDK001 administered orally with calcium carbonate in tablet form (1g) under fasted state in single dose
Experimental: Sequence 4

In this treatment Arm 4, patients will receive one dose of the following interventions one week apart

  • D: SDK001 with calcium carbonate
  • C: SDK001 under fed state
  • B: SDK001 under fasted state
  • A: IV Arsenic Trioxide under fasted state
0.15 mg/kg 2-hour IV infusion of ATO administered under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fasted state in single dose
0.15 mg/kg SDK001 administered orally under fed state (high fat breakfast) in single dose
0.15 mg/kg SDK001 administered orally with calcium carbonate in tablet form (1g) under fasted state in single dose

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
A Randomized, Open Label, Single-Centre, Single-Dose, 4-Period, 4-Treatment Cross-over Study to Evaluate the Pharmacokinetics of Oral Arsenic Trioxide Solution (SDK001) to Intravenous Arsenic Trioxide
Time Frame: Over 4 weeks in maintenance cycle

Primary Endpoints

• AUCinf of AsIII (the pharmacologically active species of ATO) for comparison of SDK001 versus IV ATO

Over 4 weeks in maintenance cycle

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 11, 2025

Primary Completion (Actual)

June 25, 2025

Study Completion (Actual)

June 30, 2025

Study Registration Dates

First Submitted

January 23, 2025

First Submitted That Met QC Criteria

March 14, 2025

First Posted (Actual)

March 18, 2025

Study Record Updates

Last Update Posted (Actual)

November 18, 2025

Last Update Submitted That Met QC Criteria

November 14, 2025

Last Verified

July 1, 2025

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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