ADI-PEG 20 in Combination With Gemcitabine and Docetaxel for the Treatment of Soft Tissue Sarcoma, Osteosarcoma, Ewing's Sarcoma, and Small Cell Lung Cancer

Phase 2

Completed

Conditions: Soft Tissue Sarcoma

Interventions: Drug: pegylated arginine deiminase
Drug: Gemcitabine
Drug: Docetaxel
Procedure: Tumor biopsy
Procedure: Research blood draw

Registration Number: NCT03449901

Lead Sponsor: Washington University School of Medicine

Brief Summary: The investigators have recently demonstrated that argininosuccinate synthase 1 (ASS1) expression is silenced in 88% of all sarcomas (n=708), and that this loss is associated with a decreased overall survival. Using the extracellular arginine depleting enzyme PEGylated arginine deiminase (ADI-PEG20), an extracellular arginine depleting enzyme, the investigators demonstrated ADI-PEG20 induces a prosurvival metabolic reprogramming in ASS1-deficient sarcomas that redirects glucose into the serine/folate pathway directing the carbons from glucose into pyrimidine biosynthesis, thus sensitizing cells to death by the pyrimidine antimetabolite gemcitabine by using metabolomics. The synthetic lethality was increased by the addition of docetaxel. Therefore a phase II clinical trial of ADI with gemcitabine and docetaxel, a standard second line therapy for soft tissue sarcoma will be conducted to determine if the clinical benefit rate of gemcitabine and docetaxel is improved by the metabolic changes induced by ADI-PEG20.

Recently published data shows that priming ASS1-deficient tumors with ADI-PEG 20 and docetaxel improves the effect of gemcitabine. Therefore, a cohort of patients consisting of ten patients diagnosed with either osteosarcoma or Ewing's sarcoma (ideally five of each), and five patients diagnosed with small cell lung cancer will be included as an exploratory cohort. Enrollment to Cohort 2 will occur concurrently with Cohort 1.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 98

Inclusion Criteria

Cohort 1: Histologically or cytologically confirmed grade 2 or 3 soft tissue sarcoma that is unresectable or metastatic that would be standardly treated with gemcitabine or gemcitabine and docetaxel. For all others, please contact the principal investigator. Prior surgery for primary or metastatic disease after chemotherapy following a response is allowed.
Cohort 2: Histologically or cytologically confirmed osteosarcoma, Ewing's sarcoma, or small cell lung cancer that is unresectable or metastatic that have either failed standard of care therapy or would be standardly treated with gemcitabine or gemcitabine and docetaxel.
Measurable disease defined as lesions that can be accurately measured in at least one dimension (longest diameter to be recorded) as ≥ 10 mm with CT scan, as ≥ 20 mm by chest x-ray, or ≥ 10 mm with calipers by clinical exam.
Treated with at least one line of systemic therapy. The allowable window between treatments is 21 days for chemotherapy or a TKI, or 5 ½ half-lives for a TKI (whichever is shorter), 21 days and progression by CT for immunotherapy, 21 days for RT, 21 days for surgery, or 28 days for an investigational agent.
Cohort 1: At least 16 years of age.
Cohort 2: Patients with osteosarcoma or Ewing's sarcoma must be at least 10 years of age. Patients with small cell lung cancer must be at least 18 years of age.
Cohort 2 (SCLC group ONLY): Must be amenable to biopsy
Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2
Normal bone marrow and organ function as defined below:
- Leukocytes ≥ 3,000/mcL
- Absolute neutrophil count ≥ 1,500/mcl
- Platelets ≥ 100,000/mcl
- Total bilirubin ≤ 2 x institutional upper limit of normal (IULN)
- AST(SGOT)/ALT(SGPT) ≤ 3 x IULN (or ≤ 5 x IULN if liver metastases are present)
- Creatinine ≤ 1.5 x IULN OR
- Creatinine clearance ≥ 60 mL/min/1.73 m2 for patients with creatinine levels above institutional normal
- Serum uric acid ≤ 8 mg/dL (with or without medication control)
Women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control, abstinence) prior to study entry and for the duration of study participation. 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 (or that of legally authorized representative, if applicable).

Exclusion Criteria

A history of other high grade malignancy ≤ 5 years previous. Exceptions include basal cell or squamous cell carcinoma of the skin which were treated with local resection only or carcinoma in situ of the cervix, or other tumors discussed with the study PI
Currently receiving any other investigational agents.
Prior treatment with ADI-PEG 20, gemcitabine, or docetaxel. Patients treated > one year ago in the adjuvant/neoadjuvant setting with gemcitabine or docetaxel would be allowed to be enrolled on the trial.
Known brain metastases. Patients with known brain metastases must be excluded from this clinical trial (except for patients with SCLC, see below) because of their poor prognosis and because they often develop progressive neurologic dysfunction that would confound the evaluation of neurologic and other adverse events. Patients with SCLC are allowed to enroll with brain metastases provided they are stable and they are at least 3 months post-treatment for brain metastases.
A history of allergic reactions attributed to compounds of similar chemical or biologic composition to ADI-PEG 20, gemcitabine, pegylated compounds, or other agents used in the study.
Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
History of seizure disorder not related to underlying cancer.
Pregnant and/or breastfeeding. Women of childbearing potential must have a negative pregnancy test within 14 days of study entry.
Known HIV-positivity on combination antiretroviral therapy because of the potential for pharmacokinetic interactions with the study treatment. In addition, these patients are at increased risk of lethal infections when treated with marrow-suppressive therapy. Appropriate studies will be undertaken in patients receiving combination antiretroviral therapy when indicated.

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Cohort 1: ADI-PEG 20 + Gemcitabine + Docetaxel	Tumor biopsy	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 1: ADI-PEG 20 + Gemcitabine + Docetaxel	Research blood draw	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 2: ADI-PEG 20 + Gemcitabine + Docetaxel	Tumor biopsy	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 2: ADI-PEG 20 + Gemcitabine + Docetaxel	Research blood draw	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 1: ADI-PEG 20 + Gemcitabine + Docetaxel	Gemcitabine	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 1: ADI-PEG 20 + Gemcitabine + Docetaxel	Docetaxel	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 2: ADI-PEG 20 + Gemcitabine + Docetaxel	Gemcitabine	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 2: ADI-PEG 20 + Gemcitabine + Docetaxel	Docetaxel	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 1: ADI-PEG 20 + Gemcitabine + Docetaxel	pegylated arginine deiminase	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)
Cohort 2: ADI-PEG 20 + Gemcitabine + Docetaxel	pegylated arginine deiminase	* ADI-PEG 20 will be given on Day -7 of Cycle 1 and then on Days 1, 8, and 15 of each subsequent cycle. Cycles are 21 days. ADI-PEG 20 will be given on an outpatient basis at a dose of 36 mg/m2 via intramuscular injection into either the deltoid or gluteal muscle. * Gemcitabine will be given intravenously at a dose of 600 mg/m2 over 90 minutes on Days 1 and 8 of each cycle. Docetaxel will be given intravenously at a dose of 60 mg/m2 over 60 minutes on Day 8 of each cycle. Patients started on gemcitabine at a dose of 900 mg/m2 or 750 mg/m2 or docetaxel at a dose of 75 mg/m2 per previous protocol version will be allowed to continue at that dose level * After Cycle 8, patients may continue on ADI-PEG 20 alone (without gemcitabine and docetaxel) upon request. * Treatment may continue for up to 34 cycles (103 weeks)

Primary Outcome Measures

Name	Time	Method
Progression-free Survival (PFS) (Cohort 1 Only)	Through completion of follow-up (median follow-up 494 days, full range of 5-1500 days).	* PFS: defined as time on study to time patients progressed on the drug combination or death or latest follow-up if progression/death is not observed yet * Progressive disease: At least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: the appearance of one or more new lesions is also considered progressions).

Secondary Outcome Measures

Name	Time	Method
Overall Survival (OS) (Cohort 1 Only)	Through completion of follow-up (median follow-up 494 days, full range of 5-1500 days).	-OS: defined as time on study to time of death due to any reasons or latest follow-up (whichever is earlier)
Clinical Benefit Rate (CBR) (Cohort 1 Only)	Through completion of treatment (median treatment of 9 months)	* CBR = proportion of patients who have experienced complete response (CR)+ partial response (PR) + stable disease (SD) lasting 24 weeks or longer * CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. Disappearance of all non-target lesions and normalization of tumor marker level. All lymph nodes must be non-pathological in size (\<10 mm short axis). * PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. * SD: Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum diameters while on study.
Safety and Tolerability of Regimen as Measured by Number and Grade of Adverse Events	From start of treatment through 30 days after completion of treatment (median treatment of 9 months + 1 month follow-up)	-The descriptions and grading scales found in the revised NCI Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 will be utilized for all toxicity reporting.
Number of Participants With Cancer-related Mortality (Cohort 1 Only)	Through completion of follow-up (median follow-up 494 days, full range of 5-1500 days).

Trial Locations

Locations (4): Columbia University Medical Center
🇺🇸
New York, New York, United States
Sarcoma Oncology Center
🇺🇸
Santa Monica, California, United States
Stanford Medicine
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Palo Alto, California, United States
Washington University School of Medicine
🇺🇸
Saint Louis, Missouri, United States