Recruiting

Early Phase 1

DSP-0390Window of Opportunity Study of DSP-0390 in Gliomas

Sponsor:

Washington University School of Medicine

Code:

NCT06636162

Conditions

Glioma, Malignant

IDH Mutation

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

DSP-0390

Study Details

Brief summary:

This study focuses on determining the pharmacokinetic and pharmacodynamic effect of DSP-0390 in brain and blood from patients with IDH-mutant glioma undergoing tumor resection. Tissue will be collected during surgical resection. Blood will be drawn at various time points throughout the 2 weeks of treatment. The hypothesis is that DSP-0390 will accumulate in brain tumor tissue at pharmacologically relevant concentrations, and that alterations in cholesterol metabolism driven by mutant IDH will increase susceptibility to DSP-0390 and lead to tumor cell death.

Conditions

Glioma, Malignant

IDH Mutation

Study ID

NCT06636162

Start date

Apr 3, 2025

Status verified date

Apr, 2026

Completion date

May 17, 2027

Anticipated

Primary completion date

Apr 17, 2027

Anticipated

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria

Patients must have either newly diagnosed and suspected glioma per radiographic features, or radiographic recurrence of a histologically confirmed IDH-mutant glioma with the following grade requirements:

ARM A: suspected lower grade glioma, or histologically confirmed grade II IDH-mutant glioma OR
ARM B: suspected high grade glioma, or histologically confirmed grade III or IV glioma.
Patient must be a candidate for surgical resection
At least 18 years of age.
Karnofsky ≥ 70%
Adequate bone marrow and organ function as defined below:

Absolute neutrophil count ≥ 1.5 K/cumm (patient may not use G-CSF or GM-CSF to achieve this ANC level)
Platelets ≥ 100 K/cumm
Hemoglobin ≥ 9 g/dL (patient may not receive transfusion or use erythropoietin to obtain this Hgb level)
Total bilirubin ≤ 1.5 x IULN (or ≤ 3 x IULN for patients with known Gilbert's syndrome)
AST(SGOT)/ALT(SGPT) ≤ 3.0 x IULN
International normalized ratio (INR), prothrombin time (PT), partial thromboplastin time (PTT), or activated partial thromboplastin time (aPTT) ≤1.5 x ULN. The use of anticoagulants is permitted as long as the PT/(a)PTT is within therapeutic limits (according to the local institution standard) and the patient has been on a stable anticoagulant regimen for at least 2 weeks prior to Day 1.
Creatinine Clearance of ≥40 mL/min per Cockroft-Gault formula or by a 24 hour urine.
If a patient is using an antiepileptic medication, the patient is on a stable dose and without seizures for 14 days prior to Day 1. The antiepileptic medication used must not fall under any prohibited therapy category as defined in the protocol.
If the patient is receiving corticosteroids at baseline, the dose administered is stable or decreasing for at least 5 days prior to Day 1. A higher stable dose of corticosteroids, if used as hormone replacement therapy, may be allowed upon discussion with the sponsor-investigator.
The effects of DSP-0390 on the developing human fetus are unknown. For this reason, women of childbearing potential and men must agree to use adequate contraception (2 forms of acceptable contraception, including one barrier method) prior to study entry, for the duration of study participation, and for 6 months after the last dose of DSP-0390. Should a woman become pregnant or suspect she is pregnant while participating in this study, she must inform her treating physician immediately.
Ability to understand and willingness to sign an IRB approved written informed consent document.

Exclusion Criteria

Patient has had prior therapy with bevacizumab or other anti-vascular endothelial growth factor (VEGF) treatments within 3 months prior to Day 1.
Patient has multifocal disease, leptomeningeal metastasis, or extracranial metastasis.
Patient has a clinically significant abnormal ECG, including those where QT prolongation is determined by the Fridericia formula (QTcF >450 msec for males and >470 msec for females); and/or the patient has a history of Torsade de Pointes.
Patient is known to have dysphagia, short-gut syndrome, gastroparesis, or other condition that may limit the ingestion or gastrointestinal absorption of drugs administered orally.
Patient is known to have active Crohn's or other inflammatory bowel disease.
A history of other malignancy for which all treatment was completed at least 2 years before Day 1 and the patient has no evidence of disease. Exceptions include non-melanoma skin cancer, cervical carcinoma in situ, and superficial bladder cancer that has been removed or curatively treated.
On active treatment for other, unrelated malignancy or currently receiving any other investigational agents.
A history of allergic reactions attributed to compounds of similar chemical or biologic composition to DSP-0390.
Patient has taken concurrent use of prohibited medications: carbamazepine, phenytoin, phenobarbital, and other strong or moderate CYP3A4 inhibitors or inducers, and strong CYP2D6 inhibitors within 1 week or 5 half-lives (whichever is greater) prior to Day 1 or expects to use them during the study. Note both oral and IV ondansetron at doses ≤ 8mg q6 hours are permitted.
The presence of any active retinal abnormality determined by screening ophthalmologic examination.
Patient has significant cardiovascular disease, including New York Heart Association (NYHA) Class III or IV congestive heart failure, myocardial infarction, unstable angina, pectoris, clinically significant cardiac arrhythmias, or stroke in the preceding 6 months prior to Day 1.
Uncontrolled intercurrent illness including, but not limited to, psychiatric illness/social situations that would limit compliance with study requirements, disorders associated with significant immunocompromised state, or ongoing or active infection.
Pregnant and/or breastfeeding. Women of childbearing potential must have a negative serum pregnancy test within 7 days prior to the first dose of DSP-0390.
Patients with HIV are eligible unless their CD4+ T-cell counts are <350 cells/mcL or they have a history of AIDS-defining opportunistic infection within the 12 months prior to registration. Concurrent treatment with effective ART according to DHHS treatment guidelines is recommended, as long as the ART agents do not fall under exclusion #8.
Patient has a known detectable viral load for hepatitis C, or evidence of a hepatitis B surface antigen.
Patient has had a major non-neurologic surgical procedure, surgical resection, open biopsy, or significant traumatic injury within 4 weeks prior to Day 1 or anticipates needing a major surgical procedure during the course of the study.
Patient has had a minor surgical procedure, fine needle aspirations, or core biopsies within 7 days prior to Day 1.
Patient has received chemotherapy or investigational anticancer therapy within 4 weeks (except 6 weeks for nitrosoureas and immunotherapy, or 8 weeks for an implanted nitrosoureas wafer) prior to Day 1.
Patient has had radiotherapy within 12 weeks prior to Day 1, unless relapse is confirmed by tumor biopsy.

Study Design

Enrollment

20 participants

Anticipated

Allocation

Non randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Arm A Low Grade Gliomas: DSP-0390 120 mg

Patients will be assigned to DSP-0390 120 mg once daily by mouth for approximately 2 weeks and up to 17 days prior to surgical resection, with the final dose being administered the morning of surgery.

experimental: Arm B High Grade Gliomas: DSP-0390 180 mg

Patients will be assigned to DSP-0390 180 mg once daily by mouth for approximately 1 week prior to surgical resection, with the final dose being administered the morning of surgery.

Interventions

DSP-0390

DSP-0390 will be administered orally with preferably 200 mL of water, or approximately one-half cup water. The patient will take DSP-0390 after a minimum of a 6-hour fast and will fast for 1 hour after taking the dose.

Primary outcome measure

Unbound DSP-0390 concentration in non-enhancing tumor tissue [ Time Frame: At time of surgery following treatment (estimated to be 2 weeks) ]
Changes in DSP-0390 concentration in plasma [ Time Frame: From start of treatment through end of treatment (estimated to be 2 weeks) ]

Central Contacts and Locations

Central contacts

Omar H Butt, M.D., Ph.D.

314-747-4241 omarhbutt@wustl.edu

Locations

Washington University School of Medicine

Recruiting

St Louis, Missouri, United States, 63110

Contacts

Omar H Butt, M.D., Ph.D.

314-747-4241 omarhbutt@wustl.edu

Principal Investigator:

Omar H Butt, M.D., Ph.D.

More Information

Sponsor

Washington University School of Medicine

Last update posted

May 6, 2026

Last verified

Apr, 2026

Keywords

DSP-0390
IDH-mutant glioma
brain tumor
brain cancer
low grade glioma
high grade glioma

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by Washington University School of Medicine on 2026-05-06.