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Temozolomide With or Without Veliparib in Treating Patients With Relapsed or Refractory Small Cell Lung Cancer

A Multi-Center, Randomized, Double-Blind Phase II Study Comparing ABT-888, a PARP Inhibitor, Versus Placebo With Temozolomide in Patients With Relapsed Sensitive or Refractory Small Cell Lung Cancer

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01638546
Enrollment
97
Registered
2012-07-11
Start date
2012-07-27
Completion date
2027-03-25
Last updated
2026-06-17

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

Conditions

Recurrent Lung Small Cell Carcinoma

Brief summary

This randomized phase II trial studies how well temozolomide with or without veliparib works in treating patients with small cell lung cancer that has returned or does not respond to treatment. Temozolomide works by damaging molecules inside the cancer cells, such as deoxyribonucleic acid (DNA), that are needed for cancer survival and growth. Veliparib may stop the growth of tumor cells by blocking proteins that are needed for repairing the damaged DNA and it may also help temozolomide to kill more cancer cells. It is not yet know whether temozolomide is more effective with or without veliparib in treating patients with relapsed or refractory small cell lung cancer.

Detailed description

PRIMARY OBJECTIVES: I. To demonstrate an improvement in progression free survival (PFS) at four months in patients with relapsed sensitive or refractory small cell lung cancer (SCLC) receiving ABT-888 (veliparib) and temozolomide compared to placebo and temozolomide. SECONDARY OBJECTIVES: I. Determine the objective response rate (ORR) (based on Response Evaluation Criteria in Solid Tumors \[RECIST\] 1.1 criteria) in both arms of the study: ABT-888 and temozolomide and placebo and temozolomide. II. Determine the overall survival (OS) of patients in both arms of the study. III. Determine the ORR, PFS and OS of ABT-888 and temozolomide and placebo and temozolomide, in the following patient groups: sensitive disease vs. refractory disease; second-line treatment vs. third-line treatment; brain metastases vs. no brain metastases. IV. Determine the safety and tolerability of ABT-888 and temozolomide in patients with SCLC. TERTIARY OBJECTIVES: I. Evaluate available tumor samples for methylated O6-methylguanine-DNA methyltransferase (MGMT) promoter by the EpiTyper assay, as well as MGMT expression by immunohistochemistry and determine if these correlate with PFS, ORR, and OS. II. Evaluate available tumor samples for poly (ADP ribose) polymerase (PARP)-1, breast cancer 1 (BRCA-1) and RAD51 recombinase (RAD51) expression by immunohistochemistry and determine if they correlate with PFS, ORR, and OS. III. Evaluate available tumor samples for messenger ribonucleic acid (mRNA) BRCA-1 expression and determine if it correlates PFS, ORR, and OS. IV. Evaluate available tumor samples for phosphatase and tensin homolog (PTEN) expression by immunohistochemistry and determine if it correlates PFS, ORR, and OS. V. Identify and enumerate circulating tumor cells (CTCs) using the Cell Search System in these patients with SCLC at baseline and at the time of repeat imaging. VI. Correlate the number of CTCs with PFS and OS at each time point. VII. Correlate the change in CTCs with radiographic response. VIII. Correlate the number of CTCs at baseline with patient characteristics (disease burden, location of metastases, progression at existing sites or new sites of disease). IX. Evaluate gamma H2A histone family, member X (H2AX)-positive CTCs using the CellSearch. X. Assess the percentage increase in DNA fragments during treatment and correlate with outcome in each of the treatment groups. XI. Evaluate plasma markers for apoptosis and angiogenesis. XII. Assess changes in plasma markers for apoptosis and angiogenesis, including caspase-cleaved cytokeratin 18 fragment (M30), soluble cytokeratin 18 (M65), pro-gastrin-releasing peptide (pro-GRP), soluble vascular endothelial growth factor (sVEGF), sVEGF receptor 2 (sVEGFR2), and soluble v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog (sKIT), and correlate these markers with outcome in the two treatment arms. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive veliparib orally (PO) twice daily (BID) on days 1-7 and temozolomide PO on days 1-5. ARM II: Patients receive placebo PO BID on days 1-7 and temozolomide as in Arm I. In both arms, courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 8-12 weeks.

Interventions

OTHERLaboratory Biomarker Analysis

Correlative studies

OTHERPlacebo Administration

Given PO

DRUGTemozolomide

Given PO

DRUGVeliparib

Given PO

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

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

Inclusion criteria

* Patients must have histologically or cytologically confirmed small cell lung cancer; confirmation will be done at Memorial Sloan-Kettering Cancer Center (MSKCC) or locally for participating sites * Patients' disease has relapsed or progressed after one or two prior chemotherapy regimens, one of which must have been an etoposide-platinum doublet; eligible patients will be defined as follows: * "Sensitive" disease: patients who had one previous line of chemotherapy and maintained an appropriate response for \> 60 days * "Refractory" disease: those patients with either (a) no response to first-line chemotherapy or progression =\< 60 days after completing treatment, or (b) "sensitive" or "refractory" disease in need of third-line therapy (i.e. completed or failed two previous lines of chemotherapy) * Eastern Cooperative Oncology Group (ECOG) performance status =\< 1 (Karnofsky \>= 70%) * Patients with asymptomatic brain metastases that do not require immediate whole brain radiation therapy and are on stable doses of steroids are allowed * Patients must have measurable disease, which is defined as at least one lesion that can be accurately measured in at least one dimension on a computed tomography (CT) scan as per RECIST version 1.1; brain metastases can be considered measurable disease if they meet this criterion * Absolute neutrophil count \>= 1,500/mcL * Platelets \>= 100,000/mcL * Hemoglobin \>= 8.5 g/dL; the use of transfusion to achieve this criterion should be at the discretion of the investigators * Total bilirubin =\< 1.5 mg/dL x institutional upper limit of normal * Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\]) =\< 3.0 x institutional upper limit of normal * Creatinine =\< 1.5 x institutional upper limit of normal OR creatinine clearance \>= 50 mL/min/1.73 m\^2 for patients with creatinine levels \>= 1.5 x upper limit of institutional normal * Women of child-bearing 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 should inform her treating physician immediately * For women of child-bearing potential, negative pregnancy test within 14 days prior to starting temozolomide and ABT-888 * Ability to understand and the willingness to sign a written informed consent document * Able to swallow pills * Patients will not be excluded based on the diagnosis of acquired immune deficiency syndrome (AIDS); given the increased risk of infection, these patients should have cluster of differentiation (CD)4 counts above 200 cells/mm\^3; patients with AIDS or human immunodeficiency virus (HIV) not receiving agents with the potential for pharmacokinetic interactions with ABT-888 may be eligible

Exclusion criteria

* Patients who have had chemotherapy or radiotherapy within 3 weeks prior to entering the study * Patients who have not recovered from adverse events due to agents administered more than 3 weeks earlier; toxicities should have resolved to baseline or to within one grade level of their baseline (not to exceed grade 2) * Patients who have been administered ABT-888, any other PARP-inhibitor, or temozolomide * Patients may not be receiving any other investigational agents * Patients with leptomeningeal involvement * Patients with active seizures or a history of seizures * History of allergic reactions attributed to compounds of similar chemical or biologic composition to ABT-888 or temozolomide * 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 * Pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is treated with ABT-888; these potential risks also apply to temozolomide * Patients with either AIDS or HIV on combination antiretroviral therapy are ineligible * Patients with a synchronous active malignancy requiring treatment

Design outcomes

Primary

MeasureTime frameDescription
Progression-free Survival, Calculated as the Proportion of Patients Alive and Without Evidence of DiseaseFrom randomization to time of progression or death, whichever occurs first, assessed at 4 monthsCompared across the two arms using a Fisher exact test.

Secondary

MeasureTime frameDescription
Overall Response (ORR) by RECIST 1.1 CriteriaFrom date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 4 monthsCorresponding exact two-sided 95% confidence intervals will be calculated and reported in both arms of the study. Comparisons between treatment arms will be performed using Fisher-exact test.
Overall SurvivalFrom randomization to time of deathEstimated in each treatment group using Kaplan-Meier method. Group comparisons will be performed using log-rank test.
Number of Participants With Adverse EventsFrom the start of treatment until 30 days from coming off treatmentTabulated According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 4.0. Summary level.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORCharles M Rudin

Memorial Sloan Kettering Cancer Center

Participant flow

Participants by arm

ArmCount
Arm I (Veliparib and Temozolomide)
Patients receive veliparib PO BID on days 1-7 and temozolomide PO on days 1-5. Laboratory Biomarker Analysis: Correlative studies Temozolomide: Given PO Veliparib: Given PO
52
Arm II (Placebo and Temozolomide)
Patients receive placebo PO BID on days 1-7 and temozolomide as in Arm I. Laboratory Biomarker Analysis: Correlative studies Placebo: Given PO Temozolomide: Given PO
45
Total97

Baseline characteristics

CharacteristicArm I (Veliparib and Temozolomide)Arm II (Placebo and Temozolomide)Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
21 Participants14 Participants35 Participants
Age, Categorical
Between 18 and 65 years
31 Participants31 Participants62 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
4 Participants1 Participants5 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants2 Participants
Race (NIH/OMB)
White
47 Participants43 Participants90 Participants
Sex: Female, Male
Female
29 Participants23 Participants52 Participants
Sex: Female, Male
Male
23 Participants22 Participants45 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
41 / 5239 / 45
other
Total, other adverse events
6 / 5235 / 45
serious
Total, serious adverse events
22 / 5218 / 45

Outcome results

Primary

Progression-free Survival, Calculated as the Proportion of Patients Alive and Without Evidence of Disease

Compared across the two arms using a Fisher exact test.

Time frame: From randomization to time of progression or death, whichever occurs first, assessed at 4 months

ArmMeasureValue (NUMBER)
Arm I (Veliparib and Temozolomide)Progression-free Survival, Calculated as the Proportion of Patients Alive and Without Evidence of Disease18 participants
Arm II (Placebo and Temozolomide)Progression-free Survival, Calculated as the Proportion of Patients Alive and Without Evidence of Disease11 participants
Secondary

Number of Participants With Adverse Events

Tabulated According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 4.0. Summary level.

Time frame: From the start of treatment until 30 days from coming off treatment

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I (Veliparib and Temozolomide)Number of Participants With Adverse Events52 Participants
Arm II (Placebo and Temozolomide)Number of Participants With Adverse Events45 Participants
Secondary

Overall Response (ORR) by RECIST 1.1 Criteria

Corresponding exact two-sided 95% confidence intervals will be calculated and reported in both arms of the study. Comparisons between treatment arms will be performed using Fisher-exact test.

Time frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 4 months

ArmMeasureValue (NUMBER)
Arm I (Veliparib and Temozolomide)Overall Response (ORR) by RECIST 1.1 Criteria20 participants
Arm II (Placebo and Temozolomide)Overall Response (ORR) by RECIST 1.1 Criteria6 participants
Secondary

Overall Survival

Estimated in each treatment group using Kaplan-Meier method. Group comparisons will be performed using log-rank test.

Time frame: From randomization to time of death

ArmMeasureValue (MEDIAN)
Arm I (Veliparib and Temozolomide)Overall Survival8.2 months
Arm II (Placebo and Temozolomide)Overall Survival7 months
Other Pre-specified

BRCA1 Expression, Assessed by Immunohistochemistry

Fisher's exact test will be used to correlate response and log-rank test to correlate with progression free survival and overall survival.

Time frame: Up to 5 years

Other Pre-specified

Changes in Plasma Markers

Correlated with outcome in the two treatment arms.

Time frame: Baseline to up to 5 years

Other Pre-specified

GammaH2AX Levels

Wilcoxon test will be used to compare the percentage increase of gammaH2AX positive cells between the two treatment groups.

Time frame: Up to 5 years

Other Pre-specified

MGMT Expression, Assessed by Immunohistochemistry

Results will be expressed as binary variables. Associations with objective response, with progression free survival and with overall survival will be tested using Fisher's exact test and log-rank test, respectively.

Time frame: Up to 5 years

Other Pre-specified

Number of Circulating Tumor Cells

The number of CTCs will be correlated with PFS and OS using Cox proportional hazards model. The change in CTCs will be correlated with radiographic response. The number of CTCs at baseline will be correlated with patient characteristics (disease burden, location of metastases, and progression at existing sites or new sites of disease). The number of CTC will be explored as a continuous variable and the presence of a threshold predictive of the outcome will be investigated.

Time frame: Up to 5 years

Other Pre-specified

PARP-1 Expression

Fisher's exact test will be used to correlate response and log-rank test to correlate with progression free survival and overall survival.

Time frame: Up to 5 years

Other Pre-specified

Presence of MGMT Promoter Methylation, Assessed by the EpiTyper Assay

Results will be expressed as binary variables. Associations with objective response, with progression free survival and with overall survival will be tested using Fisher's exact test and log-rank test, respectively.

Time frame: Up to 5 years

Other Pre-specified

PTEN Expression, Assessed by Immunohistochemistry

Fisher's exact test will be used to correlate response and log-rank test to correlate with progression free survival and overall survival.

Time frame: Up to 5 years

Other Pre-specified

RAD51 Expression, Assessed by Immunohistochemistry

Fisher's exact test will be used to correlate response and log-rank test to correlate with progression free survival and overall survival.

Time frame: Up to 5 years

Source: ClinicalTrials.gov · Data processed: Jun 18, 2026