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Cyclin Dependent Kinase (CDK)4/6 Inhibitor, PD0332991 in Advanced Non-small Cell Lung Cancer NSCLC.

A Phase II Clinical Trail of the Cyclin Dependent Kinase (CDK)4/6 Inhibitor, PD0332991 in Previously Treated, Advanced NSCLC Patients With Wildtype Retinoblastoma Protein (RB) and Inactive Cyclin Dependent Kinase (CDK)N2a

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01291017
Enrollment
19
Registered
2011-02-07
Start date
2011-02-28
Completion date
2015-02-28
Last updated
2016-05-13

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

Conditions

Non-small Cell Lung Cancer

Keywords

Advanced stage

Brief summary

The purpose of this study is to determine the efficacy and the toxicities of the study drug PD0332991 in the treatment of patients with Stage IV non-small cell lung cancer with wildtype retinoblastoma protein (RB) and inactivated cyclin dependent kinase (CDK) N2A in the tumor.

Detailed description

The oral drug PD0332991 is a highly selective reversible inhibitor of cyclin-dependent kinases 4 & 6 that is being studied for use in the treatment of advanced non-small cell lung cancer.

Interventions

PD0332991 125 mg PO days 1 - 21

Sponsors

University of Florida
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

* Histologically or cytologically proven non small cell lung cancer * Stage IV (M1a or M1b) disease. Patients may also have recurrence of early-stage disease or locally advanced disease with the presence of new distant metastases. * Cyclin dependent kinase (CDK)N2a (p16) protein absent or expressed at a low level in tumor biopsy specimen * Failed or intolerant of at least one prior systemic chemotherapy regimen (there is no maximum number of prior chemotherapy regimens) * Eastern cooperative oncology group (ECOG) performance status 0-2 * Age \>18 years. * Adequate organ and bone marrow function * Measurable disease by standard RECIST v1.1 criteria * Life expectancy of greater than 3 months

Exclusion criteria

* Inability to understand or sign the informed consent document * Inability or unwillingness to take oral medications * No available tissue specimen for p16 analysis * Chemotherapy or radiotherapy within 3 weeks prior to beginning the study drug * Other investigational agents within 4 weeks prior to beginning the study drug * All side effects from previous chemotherapy, radiotherapy or investigational agents not resolved, returned to baseline or returned to Grade 1 toxicity (exceptions are grade 2 alopecia and grade 2 peripheral neuropathy) * Major surgery within 4 weeks prior to beginning the study drug * Surgical scar from previous surgery not healed prior to beginning the study drug * High-dose or chronic steroid use * High-dose statins within 7 days * History of rhabdomyolysis * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, uncontrolled diabetes, stroke or myocardial infarction within 3 months, or psychiatric illness/social situations that would limit compliance with study requirements. * Baseline corrected QT interval (QTc) \>470ms * Pre-existing clinically significant cardiac, hepatic or renal dysfunction at the discretion of the treating physician * Untreated or uncontrolled (symptomatic or asymptomatic) brain metastases * Leptomeningeal carcinomatosis * Inability or unwillingness to use contraception during the treatment period by patients with reproductive potential. * Pregnant or breastfeeding women * HIV-positive patients on combination antiretroviral therapy

Design outcomes

Primary

MeasureTime frameDescription
Tumor Response by Direct RECIST Measurement6 monthsResponse is a decrease in the sum of the longest diameters of the target lesions by more than 30% compared to the baseline.

Secondary

MeasureTime frameDescription
Overall Survival14 monthsMedian overall survival
Progression-free Survival12 monthsMedian progression-free survival.
Plasma Levels6 monthsPlasma levels of p16, phosphorylated RB and cyclin d1 in blood.
Grade of Study Drug Toxicity24 monthsThe number of all toxicities and grades 3 and 4 (per CTCAE v3.0) toxicities that occured during the administration of the drug and during the follow up period.

Countries

United States

Participant flow

Participants by arm

ArmCount
PD0332991
PD0332991 125 mg PO days 1 - 21 PD0332991: PD0332991 125 mg PO days 1 - 21
19
Total19

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLost to Follow-up2
Overall StudyWithdrawal by Subject3

Baseline characteristics

CharacteristicPD0332991
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
12 Participants
Age, Categorical
Between 18 and 65 years
7 Participants
Region of Enrollment
United States
19 participants
Sex: Female, Male
Female
9 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
16 / 19
serious
Total, serious adverse events
2 / 19

Outcome results

Primary

Tumor Response by Direct RECIST Measurement

Response is a decrease in the sum of the longest diameters of the target lesions by more than 30% compared to the baseline.

Time frame: 6 months

ArmMeasureValue (NUMBER)
PD0332991Tumor Response by Direct RECIST Measurement0 participants
Secondary

Grade of Study Drug Toxicity

The number of all toxicities and grades 3 and 4 (per CTCAE v3.0) toxicities that occured during the administration of the drug and during the follow up period.

Time frame: 24 months

ArmMeasureGroupValue (NUMBER)
PD0332991Grade of Study Drug ToxicityGrade 3 and 4 Toxicities9 Events
PD0332991Grade of Study Drug ToxicityAll Toxicities (Grades 1 - 5)86 Events
Secondary

Overall Survival

Median overall survival

Time frame: 14 months

ArmMeasureValue (MEDIAN)Dispersion
PD0332991Overall Survival20.3 weeksStandard Error 1.7
Secondary

Plasma Levels

Plasma levels of p16, phosphorylated RB and cyclin d1 in blood.

Time frame: 6 months

Population: 4 of the 16 samples were tested by protein immunoblot (Western blot), and due to the test not being sensitive enough to detect p16, phosphorylated RB or cyclin D1 protein bands in any of the samples, the decision was made not to purse this testing any further.

ArmMeasureValue (NUMBER)
PD0332991Plasma LevelsNA Arbitrary Units
Secondary

Progression-free Survival

Median progression-free survival.

Time frame: 12 months

ArmMeasureValue (MEDIAN)Dispersion
PD0332991Progression-free Survival8 WeeksStandard Error 0.7

Source: ClinicalTrials.gov · Data processed: Mar 8, 2026