Osteosarcoma Maintenance Therapy With OST31-164

Running, not enrolling · Phase 2

Conditions studied: Bone Cancer

In brief

Up to 45 Patients aged 12 to 39 with osteosarcoma (bone cancer) that had recurred in the lungs and has recently been surgically removed will be enrolled. Patients will receive OST31-164 infusions every 3 weeks over 48 weeks and be followed after that for 3 years.

Key facts

Study ID: NCT04974008
Run by: Emerald Clinical Inc.
People needed: 39
Starts: 2021-10-21
Expected to finish: 2027-10-31
Last updated by the study team: 2025-01-22

Who can join

Age: 12 and older, up to 39. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Note: Patients enrolled on AOST2031 are eligible for enrollment in the present study.
Patients are eligible to be included in the study only if all the following criteria apply:
Age and Weight
Between 12 years of age and 39 years of age at the time the Informed Consent/ Assent form is signed.
Weight at least 40 kg. Diagnosis
Has histologic confirmation of osteosarcoma at diagnosis.
Has at least one episode of disease recurrence in the lungs without limitation on the number of episodes of recurrence as long as the following criteria are met:
Surgical resection of all possible sites of suspected pulmonary metastases to achieve a complete remission within 8 weeks prior to study enrollment
Pathological confirmation of osteosarcoma from at least one resected tumor.
Patients will not require radiographic confirmation of complete remission for enrollment. However, a postoperative CT chest scan is required as a baseline for future comparisons.
https://members.childrensoncologygroup.org/files/Disc/surgery/handbooks/OsteoBoneHandbook.pdf) Performance Status
Patient must have a performance status corresponding to ECOG scores of 0, 1, or 2. Use Karnofsky scale for patients > 16 years of age and Lansky scale for patients < years of age Prior Therapy
Patient must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, radiotherapy, or surgery prior to entering this study.
Organ Function Requirements
Patient has adequate organ function as defined below:
a. Hematological: i. Absolute neutrophil count (ANC) is at least 1,000/µL without transfusion or growth factor support. ii. Platelet count ≥ 50,000/µL without transfusion or growth factor support. b. Adequate renal function defined as: i. Creatine clearance or radioisotope glomerular filtration rate (GFR) > 70 mL/min/1.73 m2 or ii. A serum creatine based on age/gender as follows:
Maximum Serum Creatinine (mg/dL)
Age: 12 to < 13 years Male :1.2 Female:1.2 Age:13 to < 16 years Male :1.5 Female:1.4 Age: ≥ 16 years Male :1.7 Female:1.4 Note: the threshold for creatinine values in this table were derived from the Schwartz formula for estimating GFR.
c. Adequate liver function defined as: i. Total bilirubin < 1.5 x upper limit of normal (ULN) for age ii. Serum glutamic-pyruvic transaminase (SGPT) / alanine aminotransferase (ALT) < 110 U/L (for the purpose of this study the ULN for SGPT is 45 U/L) iii. Serum albumin > 2 g/dL
d. Adequate coagulation i. International normalized ratio (INR) or prothrombin time (PT) < 1.5 x ULN unless patient is receiving anticoagulant therapy as long as PT or INR is within therapeutic range of intended use of anticoagulants.
ii. Activated partial thromboplastin time (aPTT) < 1.5 x ULN unless patient is receiving anticoagulant therapy as long as aPTT is within therapeutic range of intended use of anticoagulants.
e. Adequate cardiac function defined as: i. Shortening fraction of > 27% by echocardiogram, or ii. Ejection fraction of > 50% by radionuclide angiogram or echocardiogram f. Adequate pulmonary function defined as: i. No evidence of dyspnea at rest, no history of exercise intolerance, and a pulse oximetry of > 94%.
g. Central nervous system (CNS) function defined as: i. Patients with a known seizure disorder may be enrolled if on anticonvulsants and/or are well-controlled.
ii. CNS toxicity including peripheral neuropathy < Grade 2.
Patient and/or patient's parent or legal guardian must be capable of understanding the investigational nature, potential risks, and benefits of the study. The patient and/or the parent or legal guardian must sign a written informed consent. Age-appropriate assent will be obtained per institutional guidelines.

You may not qualify if…

Has clinically evident metastatic or recurrent disease.
Has concurrent pulmonary recurrence and local recurrence at the primary tumor site.
Has primary refractory disease with progression of the primary tumor on initial-therapy.
Has CNS or any extrapulmonary disease involvement at the time of the most recent episode of disease recurrence proceeding enrollment.
Has active infection requiring systemic therapy or is dependent on or is currently receiving systemic antibiotics that cannot be discontinued before dosing. (Note: Patients who discontinue an antibiotic prior to dosing must wait at least 5 half-lives after the last dose of antibiotic before receiving any OST31-164 infusion). Inhaled prophylactic PJP (pneumocystis jiroveci pneumonia) treatment is acceptable per Investigator discretion.
Is currently dependent on or has received corticosteroids within the past 4 weeks (topical corticosteroids and occasional inhaled corticosteroids are allowed).
Is currently participating in or has participated in a study of an investigational agent or is using an investigational device within 4 weeks of the first dose of treatment.
Has a history of other active malignancy for < 2 years prior to enrollment. Basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy or is felt by the Investigator to be at low risk for recurrence is allowed.
Has an active autoimmune disease requiring systemic treatment within the past 3 months or a documented history of clinically severe autoimmune disease, or a syndrome that requires systemic steroids or immunosuppressive agents. Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment. Patients with vitiligo or resolved childhood asthma/atopy would be an exception to this rule. Patients who require intermittent use of bronchodilators or local steroid injections will not be excluded from the study. Patients with hypothyroidism stable on hormone replacement or Sjogren's syndrome will not be excluded from the study.
Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial.
Is pregnant or breastfeeding or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of study treatment.
Has a known allergy to any component of the study treatment(s) formulations.
Has a contraindication (e.g., sensitivity/allergy) to both trimethoprim/ sulfamethoxazole and amoxicillin.
Has contraindication to administration of NSAIDs.
Is currently receiving or will be receiving any chemotherapy, including PI3K inhibitors, during the treatment phase.
Has had a prior monoclonal antibody therapy within 2 weeks prior to study Day 1.
Requires or anticipates requiring tumor necrosis factor (TNF) blocking agent (e.g., infliximab) therapy for diagnosis of rheumatologic disease or inflammatory bowel disease (e.g., ankylosing spondylitis, Crohn's disease, plaque psoriasis, psoriatic arthritis, rheumatoid arthritis, or ulcerative colitis).
Has previous history of listeriosis.
Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies).
Has known active hepatitis B (e.g., HBsAg reactive) or hepatitis C (e.g., HCV RNA [qualitative] is detected).
Has received a live vaccine within 30 days prior to Study Day 1.
Patient is or has an immediate family member (spouse, children, or parent) who is directly involved with this study or is employed by the investigational site or Sponsor, unless prospective Institutional Review Board (IRB) approval (by chair or designee) is given allowing exception to this criterion for a specific patient.
Regulatory Requirements:
All patients and/or their parents or legal guardians must sign a written informed consent.
All institutional, FDA, and NCI requirements for human studies must be met.

Where it is running

Kaiser Permanente Downey Medical Center — Los Angeles, California, United States
Children's Hospital of Orange County — Orange, California, United States
Rady Children's Hospital — San Diego, California, United States
Children's Hospital of Colorado — Aurora, Colorado, United States
Connecticut Children's — Hartford, Connecticut, United States
Nemours/ Alfred I duPont Hospital for Children — Wilmington, Delaware, United States
Johns Hopkins All Children's Hospital — St. Petersburg, Florida, United States
Children's Healthcare of Atlanta — Atlanta, Georgia, United States
Ann & Robert H. Lurie Children's Hospital of Chicago — Chicago, Illinois, United States
Johns Hopkins Medical Center — Baltimore, Maryland, United States
Dana-Farber Cancer Institute — Boston, Massachusetts, United States
University of Minnesota/Masonic Cancer Center — Minneapolis, Minnesota, United States
Hackensack University Medical Center — Hackensack, New Jersey, United States
Montefiore Medical Center — The Bronx, New York, United States
Nationwide Children's Hospital — Columbus, Ohio, United States
Oregon Health & Science University — Portland, Oregon, United States
Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States
UPMC Children's Hospital of Pittsburgh — Pittsburgh, Pennsylvania, United States
St. Jude Children's Research Hospital — Memphis, Tennessee, United States
UT Southwestern Medical Center — Dallas, Texas, United States
Seattle Children's Hospital — Seattle, Washington, United States

Full record on ClinicalTrials.gov

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