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Phase II Trial Evaluating the Efficacy of Palbociclib in Combination With Carboplatin for the Treatment of Unresectable Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma

A Multi-Center Open Label Single Arm Phase II Trial Evaluating the Efficacy of Palbociclib in Combination With Carboplatin for the Treatment of Unresectable Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03194373
Enrollment
21
Registered
2017-06-21
Start date
2017-10-12
Completion date
2020-03-17
Last updated
2021-04-12

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

Conditions

Squamous Cell Carcinoma of the Head and Neck

Brief summary

The purpose of this study is to test the effectiveness (how well the drug works), safety, and tolerability of the investigational drug combination of palbociclib (Ibrance) plus carboplatin in patients with metastatic head and neck squamous cell cancer.

Interventions

DRUGPalbociclib

Palbociclib (Ibrance) (PO), dose= 125 mg PO daily, days=1-14, cycle length: 21 days Maintenance Palbociclib: Palbociclib (Ibrance) 125 mg PO daily, days 1-21, cycle length: 28 days

DRUGCarboplatin

Carboplatin (IV), dose= AUC 5, day= 1, cycle length: 21 days

Sponsors

University of Michigan Rogel Cancer Center
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 documented progressive squamous cell head and neck cancer with or without metastases, not amenable to curative treatment; or the patient has documented refusal of curative treatment. * ECOG performance status of 0-2. Eastern Cooperative Oncology Group Performance Status: an attempt to quantify cancer patients' general well-being and activities of daily life. The score ranges from 0 to 5 where 0 is asymptomatic and 5 is death. * Presence of measurable disease by CT scan per RECIST v1.1. * Age ≥18 years. * Life expectancy of ≥12 weeks. * Women of childbearing potential must have a negative serum or urine pregnancy test at time of screening and confirmed within 3 days prior to treatment. Women not of child-bearing potential will be defined as all women older than age 50 and anovulatory for 12 months. * Signed and dated informed consent document indicating that the patient (or legally acceptable representative) has been informed of all pertinent aspects of the trial prior to enrollment. * Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests, and other study procedures. * Adequate organ and marrow function

Exclusion criteria

* Previous treatment with cytotoxic chemotherapy therapy in the recurrent/metastatic setting. Previous treatment with non-cytotoxic agents in the recurrent/metastatic setting is permitted. Gastrointestinal abnormalities causing impaired absorption precluding administration of oral medications. * Evidence of untreated or progressive brain metastases, spinal cord compression, or carcinomatous meningitis. * A serious uncontrolled medical disorder or active infection that would impair their ability to receive study treatment. * Dementia or significantly altered mental status that would prohibit the understanding or rendering of informed consent and compliance with the requirements of this protocol. * Patients (male and female) having procreative potential who are not willing or not able to use adequate contraception. Women who are pregnant or breast-feeding. * Patients residing in prison. * Prior experimental therapy within 30 days of enrollment. * Availability of curative treatment option for the patient's cancer, whether surgery, chemotherapy, radiation, or combination thereof, unless the patient has documented refusal of curative treatment. * Current use or anticipated inability to avoid use of drugs that are known strong CYP3A4/5 inhibitors (atazanavir, boceprevir, conivaptan, clarithromycin, grapefruit or grapefruit juice, indinavir, itraconazole, ketoconazole, nelfinavir, nefazodone, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, voriconazole ). * Current use or anticipated inability to avoid use of drugs that are known strong CYP3A4/5 inducers (carbamazepine, dexamethasone, fosphenytoin, phenytoin, phenobarbital, rifabutin, rifampin, rifapentine, St. John's wort). * Patients with a history of severe allergic reaction to cisplatin or carboplatin

Design outcomes

Primary

MeasureTime frameDescription
Percent Disease Control Rate (DCR)12 weeksThe primary clinical objective of this trial is to estimate disease control rate (DCR) at 12 weeks in patients with metastatic head and neck squamous cell cancer treated with carboplatin and palbociclib. DCR will be defined as either CR (Complete Response: Disappearance of all target lesions, determined by two separate observations conducted not less than 4 weeks apart. There can be no appearance of new lesions.), PR (Partial Response: At least a 30% decrease in the sum of the longest diameter (LD) of target lesions, taking as reference the baseline sum LD. There can be no appearance of new lesions.) or SD (Stable Disease: Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum LD since the treatment started.) at 12 weeks.

Secondary

MeasureTime frameDescription
Median Progression Free Survival TimeUp to 2 YearsProgression-free survival (PFS) is defined as the duration of time from start of treatment to time of progression. Progressive disease is defined as at least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started, or the appearance of one or more new lesions. Estimated using a Kaplan-Meier analysis.
Median Overall Survival TimeUp to 2 YearsOverall survival is defined as the time from study enrollment to death from any cause. Estimated using a Kaplan-Meier analysis.
Number of Treatment-related ToxicitiesUp to 2 yearsNumber of adverse events believed to be related (i.e., possibly, probably, or definitely) to palbociclib in combination with carboplatin, reported by grade according to the Common Terminology for Adverse Events version 4.0 (CTCAE v4).

Countries

United States

Participant flow

Pre-assignment details

One enrolled patient withdrew prior to starting study treatment.

Participants by arm

ArmCount
Palbociclib and Carboplatin
Treatment with Palbociclib and Carboplatin for up to 6 cycles: Palbociclib (Ibrance) 125 mg PO daily, days 1-14 + Carboplatin AUC 5 IV, day 1; cycle length 21 days. Maintenance Palbociclib after 6 cycles: Palbociclib (Ibrance) 125 mg PO daily, days 1-21; cycle length 28 days.
21
Total21

Baseline characteristics

CharacteristicPalbociclib and Carboplatin
Age, Continuous65 years
ECOG Performance Status
0 (Fully functional)
8 participants
ECOG Performance Status
1 (Minor impairment)
10 participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
1 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
19 Participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
16 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
16 / 19
other
Total, other adverse events
19 / 19
serious
Total, serious adverse events
14 / 19

Outcome results

Primary

Percent Disease Control Rate (DCR)

The primary clinical objective of this trial is to estimate disease control rate (DCR) at 12 weeks in patients with metastatic head and neck squamous cell cancer treated with carboplatin and palbociclib. DCR will be defined as either CR (Complete Response: Disappearance of all target lesions, determined by two separate observations conducted not less than 4 weeks apart. There can be no appearance of new lesions.), PR (Partial Response: At least a 30% decrease in the sum of the longest diameter (LD) of target lesions, taking as reference the baseline sum LD. There can be no appearance of new lesions.) or SD (Stable Disease: Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum LD since the treatment started.) at 12 weeks.

Time frame: 12 weeks

Population: Patients were considered evaluable for response if they underwent response evaluation imaging after 2 cycles of receiving both carboplatin and palbociclib.

ArmMeasureValue (NUMBER)
Palbociclib and CarboplatinPercent Disease Control Rate (DCR)33 percentage of participants
95% CI: [13, 59]
Secondary

Median Overall Survival Time

Overall survival is defined as the time from study enrollment to death from any cause. Estimated using a Kaplan-Meier analysis.

Time frame: Up to 2 Years

Population: Patients were evaluable for survival if they underwent response evaluation imaging after 2 cycles of receiving both carboplatin and palbociclib.

ArmMeasureValue (MEDIAN)
Palbociclib and CarboplatinMedian Overall Survival Time4.6 months
Secondary

Median Progression Free Survival Time

Progression-free survival (PFS) is defined as the duration of time from start of treatment to time of progression. Progressive disease is defined as at least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started, or the appearance of one or more new lesions. Estimated using a Kaplan-Meier analysis.

Time frame: Up to 2 Years

Population: Patients were evaluable for survival if they underwent response evaluation imaging after 2 cycles of receiving both carboplatin and palbociclib.

ArmMeasureValue (MEDIAN)
Palbociclib and CarboplatinMedian Progression Free Survival Time2.9 months
Secondary

Number of Treatment-related Toxicities

Number of adverse events believed to be related (i.e., possibly, probably, or definitely) to palbociclib in combination with carboplatin, reported by grade according to the Common Terminology for Adverse Events version 4.0 (CTCAE v4).

Time frame: Up to 2 years

Population: Patients were evaluable for treatment-related toxicities if they underwent response evaluation imaging after 2 cycles of receiving both carboplatin and palbociclib.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesNeutrophil count decreased : Grade 1-22 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesNeutrophil count decreased : Grade 3-410 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesAnemia : Grade 1-25 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesAnemia : Grade 3-47 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesWhite blood cell decreased : Grade 1-23 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesWhite blood cell decreased : Grade 3-47 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesFatigue : Grade 1-27 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesFatigue : Grade 3-45 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesPlatelet count decreased : Grade 1-24 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesPlatelet count decreased : Grade 3-43 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesNausea : Grade 1-26 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesNausea : Grade 3-42 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesVomiting : Grade 1-22 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesVomiting : Grade 3-41 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesWeight loss : Grade 1-24 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesWeight loss : Grade 3-40 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesFebrile neutropenia : Grade 1-20 Participants
Palbociclib and CarboplatinNumber of Treatment-related ToxicitiesFebrile neutropenia : Grade 3-41 Participants

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