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The High-Dose Aldesleukin (IL-2) Select Trial for Patients With Metastatic Renal Cell Carcinoma

The High-Dose Aldesleukin (IL-2) Select Trial: A Trial Designed to Prospectively Validate Predictive Models of Response to High Dose IL-2 Treatment in Patients With Metastatic Renal Cell Carcinoma

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00554515
Acronym
SELECT
Enrollment
123
Registered
2007-11-07
Start date
2006-11-30
Completion date
2013-10-31
Last updated
2024-08-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Metastatic Renal Cell Carcinoma

Keywords

Kidney, Renal Cell, Metastatic, interleukin-2, select

Brief summary

High-dose interleukin 2 (Proleukin, Novartis) (IL-2) is approved by the U.S Food and Drug Administration (FDA) for the treatment of metastatic kidney cancer and is a standard treatment of this disease. At the present time, IL-2 is the only therapy for kidney cancer that can produce a remission of disease that lasts after treatment is completed. However, most patients who receive IL-2 do not benefit and all patients experience potentially dangerous side effects. Recent research has suggested that certain patients may respond better to IL-2 than others. The Cytokine Working Group is currently conducting a clinical trial that aims to identify and confirm this research and narrow the application of IL-2 to those patients most likely to benefit.

Detailed description

OBJECTIVES: Primary * To determine, in a prospective fashion, if the response rate to high-dose IL-2 for patients with metastatic renal cell carcinoma and good pathologic predictive features is significantly higher than a historical, unselected patient population. Secondary * To determine, in a prospective fashion, the response rate to high-dose IL-2 for patients with metastatic renal cell carcinoma and poor pathologic predictive features and to compare this response rate to the response rate of patients with good pathologic predictive features. * To determine if components of other predictive and prognostic models (e.g MSKCI or UCLA criteria) can help to further define the optimal population to receive high-dose IL2 for metastatic renal cell carcinoma. * To identify features of the baseline immune function (arginine, arginase, T cell zeta chain) of patients with metastatic renal cell carcinoma that are associated with response to high-dose IL-2. * To identify new proteins or patterns of gene expression that might be associated with high-dose IL-2 responsiveness in order to further narrow the application of IL-2 therapy to those who will benefit the most.

Interventions

DRUGHD IL2

Sponsors

City of Hope National Medical Center
CollaboratorOTHER
Providence Cancer Center, Earle A. Chiles Research Institute
CollaboratorOTHER
Dartmouth-Hitchcock Medical Center
CollaboratorOTHER
Indiana University
CollaboratorOTHER
Loyola University
CollaboratorOTHER
Our Lady of Mercy Medical Center
CollaboratorOTHER
Roswell Park Cancer Institute
CollaboratorOTHER
University of California, Los Angeles
CollaboratorOTHER
University of Cincinnati
CollaboratorOTHER
University of Pittsburgh
CollaboratorOTHER
University of Virginia
CollaboratorOTHER
Vanderbilt University
CollaboratorOTHER
Wayne State University
CollaboratorOTHER
Dana-Farber Cancer Institute
CollaboratorOTHER
Beth Israel Deaconess Medical Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Patients must have histologically confirmed renal cell carcinoma that is metastatic or unresectable. * If patients have measurable disease restricted to a solitary lesion, its neoplastic nature should be confirmed by cytology/histology. * Patients must provide access to tissue blocks containing adequate tumor for interpretation and analysis. * Patients must have measurable disease. * Patients must have good performance status (ECOG 0 or 1; Karnofsky PS 100-80%). * Patients must have adequate organ function. * Patients must have no contraindication of vasopressor agents. * Patients must be ≥ 18 years of age.

Exclusion criteria

* Patients who have received systemic therapy for metastatic disease. * Patients with organ allografts. * Patients who require or are likely to require systemic corticosteroid therapy for intercurrent illness. * Patients with any significant medical disease other than the malignancy (e.g. COPD, patients with ascites or pleural effusions), which in the opinion of the investigator would significantly increase the risk of immunotherapy. * Patients with a history of another malignancy within the past 5 years other than surgically cured non-melanoma skin cancer, carcinoma-in-situ or Stage I carcinoma of the cervix.

Design outcomes

Primary

MeasureTime frameDescription
Objective Response in ISM Good Risk GroupDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by investigator assessment of radiographs.

Secondary

MeasureTime frameDescription
Objective Response Rate in ISM Poor Risk GroupDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) based on treatment on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Objective Response Rate (Independent Assessment)Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks.. Response status was determined by independent assessment of radiographs.
Overall SurvivalParticipants were followed for survival up to 7 years.Overall survival based on the Kaplan-Meier method is defined as the time from treatment start to date of death or censored at the date of last documented contact.
Objective Response Rate by MSKCC Risk GroupDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Objective Response Rate by UCLA SANI ScoreDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Objective Response Rate by Tumor TypeDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
3-Year Progression-Free Survival RateDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Long-term follow-up occurred every 3 m for 2 yrs, semi-annually for yr 3 and annually for yrs 4 and 5. Relevant for this endpoint was disease status at 3 y.3-year progression-free survival rate is defined as the proportion of patients absent death or progression based on WHO criteria by 3 years since time of treatment start. PD is a \>/=25% increase in the sum of products of the perpendicular diameters of all measurable lesions. Further, PD is the appearance of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions.
Objective Response Rate by CA-9 Score (CAIX Classification)Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Objective Response Rate by PD-L1 TumorDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Objective Response Rate by B7-H3 TumorDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Objective Response Rate by CA-9 SNPDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.
Progression-Free SurvivalDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Long-term follow-up occurred every 3 m for 2 yrs, semi-annually for yr 3 and annually for yrs 4 and 5. Median survival follow-up was X months (95% CI: ).Progression-free survival based on the Kaplan-Meier method is defined as the duration of time from treatment start to date of disease progression (PD) or death. Per WHO criteria: PD is a \>/=25% increase in the sum of products of the perpendicular diameters of all measurable lesions. Further, PD is the appearance of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. Participants who were event-free were censored at the date of their last disease evaluation.
Objective Response Rate by Clear Cell Histology Risk GroupDisease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Response status was confirmed by an independent assessment of radiographs. Participants received up to 3 courses of 12 weeks duration each.The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks.

Countries

United States

Participant flow

Recruitment details

Participants enrolled from 13 institutions between November 2006 and November 2008.

Participants by arm

ArmCount
HD IL2
Participants received high-dose (HD) IL2, 600,000 IU/kg/dose (Prometheus Laboratories Inc.) i.v. every 8 hours for 5 days (maximum of 14 doses) beginning on day 1 and again on day 15. One course generally consisted of 5 days of treatment, 9 days of rest, 5 more days of treatment, and 9 weeks of rest, followed by up to two additional courses of HD IL2 for patients who benefited and tolerated most of the planned IL2 doses. A treatment delay of up to 4 weeks was allowed for resolution of side effects between courses. Patients were eligible to receive a maximum of three courses of treatment.
120
Total120

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAchieved Stable Disease7
Overall StudyAdverse Event9
Overall StudyDeath2
Overall StudyDisease progression52
Overall StudyMisc15
Overall StudyOther1
Overall StudyPhysician Decision18
Overall StudyWithdrawal by Subject3

Baseline characteristics

CharacteristicHD IL2
Age, Continuous56 years
ISM Risk Group
Good
74 Participants
ISM Risk Group
Poor
43 Participants
ISM Risk Group
Unknown
3 Participants
MSKCC Risk Group
Favorable
23 Participants
MSKCC Risk Group
Intermediate
84 Participants
MSKCC Risk Group
Poor
13 Participants
Region of Enrollment
United States
120 participants
Sex: Female, Male
Female
35 Participants
Sex: Female, Male
Male
85 Participants
UCLA SANI Score
High
8 Participants
UCLA SANI Score
Intermediate
102 Participants
UCLA SANI Score
Low
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
3 / 120
other
Total, other adverse events
2 / 120
serious
Total, serious adverse events
15 / 120

Outcome results

Primary

Objective Response in ISM Good Risk Group

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by investigator assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data for ISM analysis and classified as ISM good risk.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response in ISM Good Risk Group.23 proportion of participants
p-value: 0.042exact binomial test
Secondary

3-Year Progression-Free Survival Rate

3-year progression-free survival rate is defined as the proportion of patients absent death or progression based on WHO criteria by 3 years since time of treatment start. PD is a \>/=25% increase in the sum of products of the perpendicular diameters of all measurable lesions. Further, PD is the appearance of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Long-term follow-up occurred every 3 m for 2 yrs, semi-annually for yr 3 and annually for yrs 4 and 5. Relevant for this endpoint was disease status at 3 y.

Population: The analysis dataset is comprised of all treated patients.

ArmMeasureValue (NUMBER)
ISM Good Risk Group3-Year Progression-Free Survival Rate.108 proportion of participants
Secondary

Objective Response Rate by B7-H3 Tumor

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by B7-H3 Tumor.11 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by B7-H3 Tumor.29 proportion of participants
Comparison: Objective response rates were compared between B7-H3 tumor subgroupsp-value: 0.08Fisher Exact
Secondary

Objective Response Rate by CA-9 Score (CAIX Classification)

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by CA-9 Score (CAIX Classification).33 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by CA-9 Score (CAIX Classification).22 proportion of participants
Comparison: Objective response rates were compared between CA-9 score subgroupsp-value: 0.19Fisher Exact
Secondary

Objective Response Rate by CA-9 SNP

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by CA-9 SNP.20 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by CA-9 SNP.33 proportion of participants
Comparison: Objective response rates were compared between CA-9 SNP subgroupsp-value: 0.28Fisher Exact
Secondary

Objective Response Rate by Clear Cell Histology Risk Group

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Response status was confirmed by an independent assessment of radiographs. Participants received up to 3 courses of 12 weeks duration each.

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by Clear Cell Histology Risk Group.27 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by Clear Cell Histology Risk Group.24 proportion of participants
Poor MSKCC Risk GroupObjective Response Rate by Clear Cell Histology Risk Group.28 proportion of participants
Comparison: Objective response rates were compared between clear cell histology subgroupsp-value: 0.89Fisher Exact
Secondary

Objective Response Rate by MSKCC Risk Group

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by MSKCC Risk Group.22 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by MSKCC Risk Group.25 proportion of participants
Poor MSKCC Risk GroupObjective Response Rate by MSKCC Risk Group.31 proportion of participants
Comparison: Objective response rates were compared between MSKCC subgroups.p-value: 0.89Fisher Exact
Secondary

Objective Response Rate by PD-L1 Tumor

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by PD-L1 Tumor.19 proportion of patients
Intermediate MSKCC Risk GroupObjective Response Rate by PD-L1 Tumor.50 proportion of patients
Comparison: Objective response rates were compared between PD-L1 tumor subgroupsp-value: 0.01Fisher Exact
Secondary

Objective Response Rate by Tumor Type

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by Tumor Type.26 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by Tumor Type.00 proportion of participants
Comparison: Objective response rates were compared between tumor type subgroupsp-value: 0.33Fisher Exact
Secondary

Objective Response Rate by UCLA SANI Score

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate by UCLA SANI Score.20 proportion of participants
Intermediate MSKCC Risk GroupObjective Response Rate by UCLA SANI Score.27 proportion of participants
Poor MSKCC Risk GroupObjective Response Rate by UCLA SANI Score.00 proportion of participants
Secondary

Objective Response Rate (Independent Assessment)

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) on treatment based on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks.. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate (Independent Assessment).25 proportion of participants
Comparison: Test against the historical ORR was conducted in the overall study population as secondary analyses.p-value: 0.0014exact binomial test
Secondary

Objective Response Rate in ISM Poor Risk Group

The objective response rate (ORR) was defined as the proportion of participants achieving complete response (CR) or partial response (PR) based on treatment on World Health Organization (WHO) criteria. \[Miller et al. Cancer 1981\] Per WHO, evaluation of tumor measurements of measurable lesions centers on the percent change from baseline in the sum of the perpendicular diameters. Complete Response (CR) is disappearance of all clinical and laboratory evidence of disease; Partial Response (PR) is a \>/= 50% decrease. PR status also requires no simultaneous increase in the size of any metastatic lesion, absence of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. CR and PR status needs confirmation within 4 weeks. Response status was determined by independent assessment of radiographs.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Participants received up to 3 courses of 12 weeks duration each. Median (range) days on treatment: 20 (1-262).

Population: The analysis dataset is comprised of all treated patients with available tumor tissue/data for ISM analysis and classified as ISM poor risk.

ArmMeasureValue (NUMBER)
ISM Good Risk GroupObjective Response Rate in ISM Poor Risk Group.23 proportion of participants
Comparison: Objective response rates were compared between ISM good and poor risk subgroups. ISM good risk ORR reported under primary endpoint.p-value: 0.39Fisher Exact
Secondary

Overall Survival

Overall survival based on the Kaplan-Meier method is defined as the time from treatment start to date of death or censored at the date of last documented contact.

Time frame: Participants were followed for survival up to 7 years.

Population: The analysis dataset is comprised of all treated patients.

ArmMeasureValue (MEDIAN)
ISM Good Risk GroupOverall Survival42.8 months
Secondary

Progression-Free Survival

Progression-free survival based on the Kaplan-Meier method is defined as the duration of time from treatment start to date of disease progression (PD) or death. Per WHO criteria: PD is a \>/=25% increase in the sum of products of the perpendicular diameters of all measurable lesions. Further, PD is the appearance of one or more new metastatic lesions and/or unequivocal progression of existing non-target lesions. Participants who were event-free were censored at the date of their last disease evaluation.

Time frame: Disease was evaluated radiologically at baseline and during weeks 8 and 12 of each course. Long-term follow-up occurred every 3 m for 2 yrs, semi-annually for yr 3 and annually for yrs 4 and 5. Median survival follow-up was X months (95% CI: ).

Population: The analysis dataset is comprised of all treated patients.

ArmMeasureValue (MEDIAN)
ISM Good Risk GroupProgression-Free Survival4.2 months

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026