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Trial of Olaparib in Patients With Metastatic Urothelial Cancer Harboring DNA Damage Response Gene Alterations

Phase 2 Trial of Olaparib in Patients With Metastatic Urothelial Cancer Harboring DNA Damage Response Gene Alterations

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03448718
Enrollment
19
Registered
2018-02-28
Start date
2018-04-17
Completion date
2021-10-15
Last updated
2023-11-22

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

Conditions

Metastatic Urothelial Cancer

Brief summary

This is a single arm open label multi-institutional phase II trial of olaparib monotherapy in subjects with metastatic urothelial cancer harboring somatic DNA damage response (DDR) alterations. The primary objective of the study is to estimate the objective response rate (per RECIST 1.1) to treatment with olaparib.

Interventions

DRUGOlaparib

1 cycle = 28 days. Subject's with calculated creatinine clearance (CrCl) of ≥ 40 mL/min will start at a dose of olaparib tablets of 300 mg twice a day. Subjects with a CrCl of \> 30 to \< 40 mL/min will start at a dose of olaparib tablets 200 mg twice a day.

Sponsors

Icahn School of Medicine at Mount Sinai
CollaboratorOTHER
AstraZeneca
CollaboratorINDUSTRY
Matthew Galsky
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Written informed consent and HIPAA authorization for release of personal health information prior to registration. NOTE: HIPAA authorization may be included in the informed consent or obtained separately. * Age ≥ 18 years at the time of consent. * ECOG Performance Status of ≤ 1 within 14 days prior to registration. Cisplatin-ineligible chemotherapy-naïve subjects (see inclusion criteria #8) may have an ECOG Performance Status of ≤ 2. * Histological or cytological evidence/confirmation of urothelial cancer. * Metastatic and/or unresectable (cT4b) urothelial cancer. * Metastatic disease evaluable on imaging studies. Subjects may have measurable disease according to RECIST 1.1 or bone-only disease within 30 days prior to registration. * NOTE: Bone-only subjects are eligible if their disease can be documented/ evaluated by bone scans, CT or MRI. Their disease will be assessed using MD Anderson criteria.34 * NOTE: Previously irradiated lesions are eligible as a target lesion only if there is documented progression of the lesion after irradiation. * Somatic alteration considered pathogenic/likely pathogenic in one of the following DDR genes as determined by genomic sequencing performed in a Clinical Laboratory Improvement Amendments (CLIA) laboratory. Somatic alterations will include nonsense, frameshift, splice-site or missense mutations or homozygous deletions. Subjects with alterations in DDR genes not included in the list below will be considered on a case by case basis after discussion with the sponsor-investigator(s). Subjects with germline alterations in DDR genes will be considered on a case by case basis and will be reviewed by the sponsor-investigator(s). At least 6 subjects will have BRCA or ATM alterations. * Nucleotide Excision Repair: ERCC2, ERCC3,ERCC4, ERCC5, ERCC6 * Homologous Recombination: BRCA1, RAD52, BRCA2, RAD54L, RAD50, NBN RAD51, MRE11A, RAD51B, RAD51D, RAD51C, CTIP * DNA Sensor: ATM, ATR, MDC1, ATRX, CHEK1, CHEK2 * Fanconi Anemia Pathway: PALB2, FANCE, BRIP1, FANCF, FANCA, FANCG FANCB, BLM, FANCC, FANCD2 * Base Excision Repair: XRCC2, XRCC3, XRCC4, XRCC5, XRCC6 * Other: MUTYH, RECQL4, POLQ, POLE, WRN * A subject with prior brain metastasis may be considered if they have completed their treatment for brain metastasis at least 4 weeks prior to study registration, have been off of corticosteroids for ≥ 2 weeks, and are asymptomatic * Subjects must have progressed despite at least 1 prior line of treatment for metastatic and/or unresectable urothelial cancer. However, cisplatin-ineligible (defined by a calculated creatinine clearance of \>30 but \< 60 mL/min OR CTCAE v4 Grade ≥ 2 audiometric hearing loss OR CTCAE v4 Grade ≥ 2 peripheral neuropathy OR ECOG PS = 2), and chemotherapy-naïve subjects are also eligible. * Prior cancer treatment (systemic therapy or radiation therapy) must be completed at least 3 weeks prior to registration and the subject must have recovered from all reversible acute toxic effects of the regimen (other than alopecia) to Grade ≤ 1 or baseline. * Demonstrate adequate organ function as defined in the table below. All screening labs to be obtained within 28 days prior to registration. * Absolute Neutrophil Count (ANC) ≥ 1.5 x 109/L * Hemoglobin (Hgb) ≥ 9 g/dL * Platelets ≥ 100 x 109/L * Calculated creatinine clearance ≥ 30 mL/min * Bilirubin ≤ 1.5 × upper limit of normal (ULN) * Aspartate aminotransferase (AST) ≤ 2.5 × ULN (or ≤ 5 × ULN if liver metastases) * Alanine aminotransferase (ALT) ≤ 2.5 × ULN (or ≤ 5 × ULN if liver metastases) * Female subjects must be postmenopausal or there must be evidence of non-childbearing status for women of childbearing potential: negative urine or serum pregnancy test within 28 days of study treatment and confirmed prior to treatment on day 1. * Females of childbearing potential must be willing to abstain from heterosexual activity or to use 2 forms of highly effective methods of contraception from the time of informed consent until 90 days after treatment discontinuation. The two contraception methods can be comprised of two barrier methods, or a barrier method plus a hormonal method. Males must be willing to abstain from heterosexual activity or to use 2 forms of highly effective methods of contraception from the time of informed consent until 90 days after treatment discontinuation. * As determined by the enrolling physician or protocol designee, ability of the subject to understand and comply with study procedures for the entire length of the study * 15\. All subjects must have adequate archival tissue available prior to registration (i.e., at least 15 unstained slides or paraffin block). Archival tissue should represent invasive or metastatic urothelial cancer with a preference for metastatic tissue if available. Archival tissue should be identified at screening and shipped by C1D1. Subjects without adequate tissue may be considered on a case by case basis after discussion with the sponsor-investigator.

Exclusion criteria

* Active infection requiring systemic therapy. * Pregnant or breastfeeding (NOTE: breast milk cannot be stored for future use while the mother is being treated on study). * Known additional malignancy that is active and/or progressive requiring treatment; subjects with other malignancies that have been definitively treated and who have been rendered disease free will be eligible. * Prior treatment with a PARP inhibitor, including olaparib. * Treatment with any investigational drug within 30 days prior to registration. * Involvement in the planning and/or conduct of the study (applies to both AstraZeneca staff and/or staff at the study site). * Resting ECG with QTc \> 470 msec on 2 or more time points within a 24 hour period or family history of long QT syndrome. * Concomitant use of known strong CYP3A inhibitors (eg. itraconazole, telithromycin, clarithromycin, protease inhibitors boosted with ritonavir or cobicistat, indinavir, saquinavir, nelfinavir, boceprevir, telaprevir) or moderate CYP3A inhibitors (eg. ciprofloxacin, erythromycin, diltiazem, fluconazole, verapamil). The required washout period prior to starting olaparib is 2 weeks. * Concomitant use of known strong (eg. phenobarbital, enzalutamide, phenytoin, rifampicin, rifabutin, rifapentine, carbamazepine, nevirapine and St John's Wort) or moderate CYP3A inducers (eg. bosentan, efavirenz, modafinil). The required washout period prior to starting olaparib is 5 weeks for enzalutamide or phenobarbital and 3 weeks for other agents. * Subjects with myelodysplastic syndrome/acute myeloid leukemia or with features suggestive of MDS/AML. * Major surgery within 2 weeks of starting study treatment and subjects must have recovered from any effects of any major surgery. * Subjects considered a poor medical risk due to a serious, uncontrolled medical disorder, non-malignant systemic disease or active, uncontrolled infection. Examples include, but are not limited to, uncontrolled ventricular arrhythmia, recent (within 3 months) myocardial infarction, uncontrolled major seizure disorder, unstable spinal cord compression, superior vena cava syndrome, extensive interstitial bilateral lung disease on High Resolution Computed Tomography (HRCT) scan, history of pneumonitis, or any psychiatric disorder that prohibits obtaining informed consent. * Subjects unable to swallow orally administered medication and subjects with gastrointestinal disorders likely to interfere with absorption of the study medication. * Immunocompromised subjects, e.g., subjects who are known to be serologically positive for human immunodeficiency virus (HIV). * Subjects with a known hypersensitivity to olaparib or any of the excipients of the product. * Subjects with known active hepatitis (i.e. Hepatitis B or C) due to risk of transmitting the infection through blood or other body fluids * Previous allogeneic bone marrow transplant or double umbilical cord blood transplantation (dUCBT)

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR)Up to a maximum of 17 monthsPer Response Evaluation Criteria In Solid Tumors Criteria (RECIST): Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progressive Disease (PD) \>= 20% increase in tumor burden relative to nadir or the appearance of one or more new lesions; Stable Disease (SD), not meet criteria for CR/PR/PD. ORR is defined as the proportion of all subjects with confirmed PR or CR according to RECIST 1.1.

Secondary

MeasureTime frameDescription
Progression-Free Survival (PFS)Time of treatment start until the criteria for disease progression or death. Up to a maximum of 17 months.Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST): Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progressive Disease (PD) \>= 20% increase in tumor burden relative to nadir or the appearance of one or more new lesions; Stable Disease (SD), not meet criteria for CR/PR/PD. PFS is defined as time from registration until disease progression met by RECIST 1.1 or death from any cause.

Other

MeasureTime frameDescription
Overall Survival (OS)Time of treatment start until death or date of last contact, up to a maximum of 23 months.Overall survival is defined as the time from treatment start until death or date of last contact.
Adverse EventsAE had been recorded from time of signed informed consent until 30 days after discontinuation of study drug(s) or until a new anti-cancer treatment starts, whichever occurs first, up to a maximum of 18 months.Number of participants with treatment related adverse events are reported by CTCAEv4 term and grade.

Countries

United States

Participant flow

Participants by arm

ArmCount
Olaparib Monotherapy
The starting dose of olaparib tablets will be dependent on the subject's calculated creatinine clearance (CrCl). Subjects with a CrCl of ≥ 40 mL/min will start at a dose of olaparib tablets of 300 mg twice a day. Subjects with a CrCl of \> 30 to \< 40 mL/min will start at a dose of olaparib tablets 200 mg twice a day. Olaparib: 1 cycle = 28 days. Subject's with calculated creatinine clearance (CrCl) of ≥ 40 mL/min will start at a dose of olaparib tablets of 300 mg twice a day. Subjects with a CrCl of \> 30 to \< 40 mL/min will start at a dose of olaparib tablets 200 mg twice a day.
19
Total19

Baseline characteristics

CharacteristicOlaparib Monotherapy
Age, Continuous66 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
19 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Prior Systemic Therapies2 Lines of therapy
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
2 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
16 Participants
Region of Enrollment
United States
19 participants
Sex: Female, Male
Female
6 Participants
Sex: Female, Male
Male
13 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
13 / 19
other
Total, other adverse events
18 / 19
serious
Total, serious adverse events
11 / 19

Outcome results

Primary

Objective Response Rate (ORR)

Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST): Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progressive Disease (PD) \>= 20% increase in tumor burden relative to nadir or the appearance of one or more new lesions; Stable Disease (SD), not meet criteria for CR/PR/PD. ORR is defined as the proportion of all subjects with confirmed PR or CR according to RECIST 1.1.

Time frame: Up to a maximum of 17 months

Population: Out of 19 patients, four subjects were not evaluable for best response.

ArmMeasureValue (NUMBER)
Olaparib MonotherapyObjective Response Rate (ORR)0 Percentage of participants
Secondary

Progression-Free Survival (PFS)

Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST): Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progressive Disease (PD) \>= 20% increase in tumor burden relative to nadir or the appearance of one or more new lesions; Stable Disease (SD), not meet criteria for CR/PR/PD. PFS is defined as time from registration until disease progression met by RECIST 1.1 or death from any cause.

Time frame: Time of treatment start until the criteria for disease progression or death. Up to a maximum of 17 months.

ArmMeasureValue (MEDIAN)
Olaparib MonotherapyProgression-Free Survival (PFS)1.9 Months
Other Pre-specified

Adverse Events

Number of participants with treatment related adverse events are reported by CTCAEv4 term and grade.

Time frame: AE had been recorded from time of signed informed consent until 30 days after discontinuation of study drug(s) or until a new anti-cancer treatment starts, whichever occurs first, up to a maximum of 18 months.

ArmMeasureGroupValue (NUMBER)
Olaparib MonotherapyAdverse EventsSore throat1 Participants
Olaparib MonotherapyAdverse EventsChronic kidney disease1 Participants
Olaparib MonotherapyAdverse EventsCreatinine increased2 Participants
Olaparib MonotherapyAdverse EventsWBC count decreased1 Participants
Olaparib MonotherapyAdverse EventsLymphocyte count decreased2 Participants
Olaparib MonotherapyAdverse EventsNeutrophil count decreased2 Participants
Olaparib MonotherapyAdverse EventsPlatelet count decreased3 Participants
Olaparib MonotherapyAdverse EventsAnemia5 Participants
Olaparib MonotherapyAdverse EventsFatigue4 Participants
Olaparib MonotherapyAdverse EventsFever1 Participants
Olaparib MonotherapyAdverse EventsDizziness1 Participants
Olaparib MonotherapyAdverse EventsAnorexia2 Participants
Olaparib MonotherapyAdverse EventsMyalgia1 Participants
Olaparib MonotherapyAdverse EventsNausea4 Participants
Olaparib MonotherapyAdverse EventsVomiting3 Participants
Olaparib MonotherapyAdverse EventsDiarrhea2 Participants
Olaparib MonotherapyAdverse EventsConstipation1 Participants
Olaparib MonotherapyAdverse EventsAbdominal pain1 Participants
Olaparib MonotherapyAdverse EventsAllergic reaction1 Participants
Olaparib MonotherapyAdverse EventsConfusion1 Participants
Olaparib MonotherapyAdverse EventsPapulopustular rash1 Participants
Olaparib MonotherapyAdverse EventsSkin disorders, other1 Participants
Other Pre-specified

Overall Survival (OS)

Overall survival is defined as the time from treatment start until death or date of last contact.

Time frame: Time of treatment start until death or date of last contact, up to a maximum of 23 months.

ArmMeasureValue (MEDIAN)
Olaparib MonotherapyOverall Survival (OS)9.5 Months

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