How [14C]-DSP-5336 is Absorbed, Broken Down, and Removed From the Body After a Single Oral Dose in Patients With Advanced Blood Cancers

Trial statusRecruiting
Trial phasePhase 1
Trial typeInterventional
Biological sexAll
Age18+
SponsorSumitomo Pharma America, Inc.

About this trial

The purpose of this study is to evaluate the absorption, metabolism, and excretion of DSP-5336 following a single oral administration of the study drug in patients with hematologic malignancies whose disease has progressed after available standard therapies.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Male or female, of any race, ≥ 18 years of age. Female patients must be surgically sterile or postmenopausal. Male patients must be permanently sterile or agree to use contraception.

Have an advanced hematological malignancy that is relapsed, refractory, or has progressed following receipt of standard and available treatments.

Any prior pre-treatment toxicities resolved to ≤Grade 1 prior to enrolment, with exception of ≤Grade 2 alopecia or neuropathy.

Adequate kidney and liver function

Disqualifiers

Histologic diagnosis of acute promyelocytic leukemia.

Abnormal ECG that is clinically significant, such as QTcF > 480 msec. QT interval correction can be performed in the case of bundle branch block.

History of torsades de pointes.

Left ventricular ejection fraction ≤ 45%, as determined by echocardiogram.

Trial design

Design model

Sequential

Treatments tested in this trial

  • DSP-5336

    Drug

    tablet

  • [14C]-DSP-5336

    Drug

    oral solution

Treatment groups

8 Participants
are divided into 2 treatment groups
Group A: DSP-5336 tablets and [14C]-DSP-5336 solutionExperimental treatment 2 interventions
Group B: Optional Continued AccessExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Total recovery of radioactivity in urine as percentage of total radioactive dose of [14C]-DSP-5336

The percentage of dose excreted in urine

Time frame
Day 1 to 4, max 7 days if less than 90% is collected by Day 4
2

Total recovery of radioactivity in fecal waste as percentage of total radioactive dose of [14C]-DSP-5336

The percentage of dose excreted in fecal waste

Time frame
Day 1 to 4, max 7 days if less than 90% is collected by Day 4
3

Total recovery of radioactivity in excreta balance as percentage of total radioactive dose of [14C]-DSP-5336

The percentage of dose excreted in combined urine and fecal waste

Time frame
Day 1 to 4, max 7 days if less than 90% is collected by Day 4
4

Relative abundance (mean value) of [14C]-DSP-5336

Plasma samples will be analyzed for \[14C\]-DSP-5336 and its metabolites.

Time frame
4 days, max 7 days

Secondary outcomes

1

Area under the plasma concentration time profile from time zero to time of the last quantifiable concentration (AUClast) of [14C]-DSP-5336

The determination of AUClast using the linear/log trapezoidal rule

Time frame
4 days, max 7 days
2

Cmax for the relative bioavailability of [14C]-DSP-5336

Analysis of the maximum concentration (Cmax) of the relative bioavailability of \[14C\]-DSP-5336 utilizing the ratio of the adjusted geometric means

Time frame
4 days, max 7 days
3

t(1/2) of [14C]-DSP-5336

Elimination half-life (t\[1/2\]) of \[14C\]-DSP-5336

Time frame
4 days, max 7 days
4

Ratio of plasma to whole blood total radioactivity

The fraction of \[14C\]-DSP-5336 radioactivity associated with whole blood and plasma and with red blood cells and other cellular components of whole blood was determined by using the concentration of \[14C\]-DSP-5336 radioactivity in whole blood and plasma

Time frame
4 days, max 7 days

Other outcomes

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