NCT05333458

Brief Summary

This phase II trial tests whether atezolizumab in combination with selinexor works to shrink tumors in patients with alveolar soft part sarcoma and whether the study drugs are better than the usual approach in treating this type of cancer. The usual approach is defined as care most people get for alveolar soft part sarcoma if they are not part of a clinical study, which includes treatment with radiation, kinase inhibitor drugs, immunotherapy drugs, or chemotherapy drugs. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Selinexor is in a class of medications called selective inhibitors of nuclear export (SINE). It works by blocking a protein called CRM1, which may help keep cancer cells from growing and may kill them. Giving atezolizumab in combination with selinexor may help shrink tumors and stabilize the cancer in patients with alveolar soft part sarcoma.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
27

participants targeted

Target at below P25 for phase_2

Timeline
12mo left

Started Aug 2022

Longer than P75 for phase_2

Geographic Reach
1 country

13 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress79%
Aug 2022May 2027

First Submitted

Initial submission to the registry

April 15, 2022

Completed
4 days until next milestone

First Posted

Study publicly available on registry

April 19, 2022

Completed
4 months until next milestone

Study Start

First participant enrolled

August 29, 2022

Completed
4.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2027

Last Updated

April 13, 2026

Status Verified

December 1, 2025

Enrollment Period

4.7 years

First QC Date

April 15, 2022

Last Update Submit

April 9, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Objective response rate

    Initial response documented within first 12 cycles of treatment and confirmed 4-8 weeks after documentation of initial response by Response Evaluation Criteria in Solid Tumors version 1.1.

    Within first 12 cycles of treatment confirmed 4-8 weeks later (Each cycle = 28 days)

Secondary Outcomes (1)

  • Biopsy results

    Up to 2 years

Study Arms (1)

Treatment (atezolizumab, selinexor)

EXPERIMENTAL

Patients receive atezolizumab IV over 30-60 minutes on day 8 of cycle 1, and then on day 1 of subsequent cycles. Patients also receive selinexor PO on days 1, 8, and 15 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO during screening and CT and collection of blood samples throughout the study. Adult patients also undergo biopsies throughout the study.

Biological: AtezolizumabProcedure: Biopsy ProcedureProcedure: Biospecimen CollectionProcedure: Computed TomographyProcedure: Echocardiography TestDrug: Selinexor

Interventions

AtezolizumabBIOLOGICAL

Given IV

Also known as: MPDL 3280A, MPDL 328OA, MPDL-3280A, MPDL3280A, MPDL328OA, RG 7446, RG-7446, RG7446, RO 5541267, RO-5541267, RO5541267, Tecentriq
Treatment (atezolizumab, selinexor)

Undergo biopsy

Also known as: Biopsy, BIOPSY_TYPE, Bx
Treatment (atezolizumab, selinexor)

Undergo collection of blood samples

Also known as: Biological Sample Collection, Biospecimen Collected, Specimen Collection
Treatment (atezolizumab, selinexor)

Undergo ECHO

Also known as: EC, Echocardiography
Treatment (atezolizumab, selinexor)

Given PO

Also known as: ATG-010, CRM1 Nuclear Export Inhibitor KPT-330, KPT 330, KPT-330, KPT330, Nexpovio, Selective Inhibitor of Nuclear Export KPT-330, SINE KPT-330, Xpovio
Treatment (atezolizumab, selinexor)

Undergo CT

Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography
Treatment (atezolizumab, selinexor)

Eligibility Criteria

Age12 Years+
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • To be enrolled in the safety run-in, patients must have an advanced soft tissue sarcoma (not otherwise specified \[NOS\]). To be enrolled in the ASPS cohort, patients must have histologically or cytologically confirmed alveolar soft part sarcoma that is not curable by surgery
  • Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as ≥ 20 mm (≥ 2 cm) by chest x-ray or as ≥ 10 mm (≥ 1 cm) with CT scan, MRI, or calipers by clinical exam.
  • Patients with unresectable, metastatic and measurable ASPS that is resistant/refractory to ICI treatment will be eligible for the ASPS cohort of this study if they show clinical and/or radiological evidence of disease progression after receiving prior ICI therapy (including history and increasing physical symptoms). On-study documentation will include a physician's rationale that supports evidence of clinical disease progression (i.e., increasing tumor pain)
  • Age \>= 12 years. Because no dosing or adverse event data are currently available on the use of atezolizumab in combination with selinexor in patients ˂ 18 years of age, children \< 12 years of age are excluded from this study
  • Eastern Cooperative Oncology Group (ECOG) performance status =\< 2 (Karnofsky \>= 70%)
  • Absolute neutrophil count \>= 1,000/mcL
  • Platelets \>= 100,000/mcL
  • Hemoglobin \>= 9 g/dL
  • Total bilirubin =\< 1.5 x institutional upper limit of normal (ULN) (however, patients with known Gilbert disease who have serum bilirubin level =\< 3 x ULN may be enrolled)
  • Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase \[SGPT\]) =\< 2.5 x institutional ULN or =\< 5 x ULN for patients with liver metastases
  • Serum creatinine =\< 1.5 x institutional ULN OR creatinine clearance \>= 30 mL/min/1.73 m\^2 by Cockcroft-Gault
  • Serum albumin \>= 2.5 g/dL
  • Baseline sodium (Na+) \>= 130 mEq/L
  • Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 28 days are eligible for this trial
  • Administration of selinexor or atezolizumab may have an adverse effect on pregnancy and poses a risk to the human fetus, including embryo-lethality. Female patients of child-bearing potential and male patients must agree to use highly effective contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, for 90 days after the last dose of selinexor, and for 150 days after the last dose of atezolizumab, whichever is longer. Breastfeeding is not allowed while on selinexor or for 90 days after the last dose of selinexor. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
  • +4 more criteria

You may not qualify if:

  • Malabsorption syndrome or other conditions that would interfere with intestinal absorption
  • Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study. However, the following therapies are allowed:
  • Hormone-replacement therapy or oral contraceptives
  • Herbal therapy \> 1 week prior to cycle 1, day 1 (herbal therapy intended as anti-cancer therapy must be discontinued at least 1 week prior to cycle 1, day 1)
  • Palliative radiotherapy for bone metastases \> 2 weeks prior to cycle 1, day 1
  • Treatment with any other agent administered for the treatment of the patient's cancer, within five half-lives or 3 weeks prior to cycle 1, day 1, whichever is shorter
  • History of malignancy other than ASPS prior to screening, with the exception of malignancies with a negligible risk of metastasis or death (e.g., 5-year overall survival \[OS\] rate \> 90%), such as adequately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, localized prostate cancer, ductal carcinoma in situ, or stage I uterine cancer
  • Treatment with systemic immunostimulatory agents (including, but not limited to, interferon and interleukin 2 \[IL-2\]) within 4 weeks or 5 half-lives of the drug (whichever is longer) prior to initiation of study treatment
  • Treatment with systemic immunosuppressive medications (including, but not limited to, prednisone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor \[anti-TNF\] agents) within 2 weeks prior to cycle 1, day 1 or anticipation of need for systemic immunosuppressive medication during study treatment, with the following exceptions:
  • Patients who have received acute, low dose, systemic immunosuppressant medications or one-time pulse dose of systemic immunosuppressant medication (e.g., 48 hours of corticosteroids for a contrast allergy) are eligible after Principal Investigator confirmation has been obtained
  • Patients who have received mineralocorticoids (e.g., fludrocortisone), corticosteroids for chronic obstructive pulmonary disease (COPD) or asthma, or low-dose corticosteroids for orthostatic hypotension or adrenocortical insufficiency are eligible
  • Patients taking bisphosphonate therapy for symptomatic hypercalcemia. Use of bisphosphonate therapy for other reasons (e.g., bone metastasis or osteoporosis) is allowed
  • Patients with known primary central nervous system (CNS) malignancy or symptomatic CNS metastases are excluded, with the following exceptions:
  • Patients with asymptomatic untreated CNS disease may be enrolled, provided all of the following criteria are met:
  • Evaluable or measurable disease outside the CNS
  • +41 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (13)

Keck Medicine of USC Koreatown

Los Angeles, California, 90020, United States

RECRUITING

Los Angeles General Medical Center

Los Angeles, California, 90033, United States

RECRUITING

USC / Norris Comprehensive Cancer Center

Los Angeles, California, 90033, United States

RECRUITING

Smilow Cancer Hospital Care Center at Saint Francis

Hartford, Connecticut, 06105, United States

RECRUITING

Yale University

New Haven, Connecticut, 06520, United States

RECRUITING

Smilow Cancer Hospital Care Center-Trumbull

Trumbull, Connecticut, 06611, United States

RECRUITING

MedStar Georgetown University Hospital

Washington D.C., District of Columbia, 20007, United States

RECRUITING

National Cancer Institute Developmental Therapeutics Clinic

Bethesda, Maryland, 20892, United States

RECRUITING

National Institutes of Health Clinical Center

Bethesda, Maryland, 20892, United States

ACTIVE NOT RECRUITING

Ohio State University Comprehensive Cancer Center

Columbus, Ohio, 43210, United States

RECRUITING

University of Oklahoma Health Sciences Center

Oklahoma City, Oklahoma, 73104, United States

RECRUITING

University of Pittsburgh Cancer Institute (UPCI)

Pittsburgh, Pennsylvania, 15232, United States

RECRUITING

M D Anderson Cancer Center

Houston, Texas, 77030, United States

RECRUITING

MeSH Terms

Conditions

Sarcoma, Alveolar Soft Part

Interventions

atezolizumabBiopsySpecimen Handlingselinexor

Condition Hierarchy (Ancestors)

Neoplasms, Muscle TissueNeoplasms, Connective and Soft TissueNeoplasms by Histologic TypeNeoplasmsSarcoma

Intervention Hierarchy (Ancestors)

CytodiagnosisCytological TechniquesClinical Laboratory TechniquesDiagnostic Techniques and ProceduresDiagnosisDiagnostic Techniques, SurgicalSurgical Procedures, OperativeInvestigative Techniques

Study Officials

  • Alice P Chen

    National Cancer Institute LAO

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
NIH
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 15, 2022

First Posted

April 19, 2022

Study Start

August 29, 2022

Primary Completion (Estimated)

May 1, 2027

Study Completion (Estimated)

May 1, 2027

Last Updated

April 13, 2026

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will share

NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page.

More information

Locations