Combination Trial of Tipifarnib and Alpelisib in Adult Recurrent/ Metastatic Head and Neck Squamous Cell Carcinoma (R/M HNSCC)

June 3, 2026 updated by: Kura Oncology, Inc.

A Phase 1/2 Open-label, Biomarker-defined Cohort Trial to Evaluate the Safety, Determine the Recommended Combination Dosing, and Assess Early Antitumor Activity of Tipifarnib and Alpelisib for the Treatment of Adult Participants Who Have HRAS-overexpressing and/or PIK3CA-mutated and/or - Amplified Recurrent/Metastatic Head and Neck Squamous Cell Carcinoma

This phase 1/2 combination trial of tipifarnib, a farnesyltransferase inhibitor, and alpelisib, a PI3K inhibitor in participants with recurrent/metastatic head and neck squamous cell carcinoma (HNSCC) whose tumors overexpress the HRAS protein and/or are PIK3CA-mutated and/or PIK3CA-amplified.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
45

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Expanded Access

Expanded Access

A way for patients with serious diseases or conditions who cannot participate in a clinical trial to gain access to a medical product that has not been approved by the U.S. Food and Drug Administration (FDA). Also called compassionate use. There are different expanded access types.
Available

Available

  • Available: Expanded access is currently available for this investigational treatment, and patients who are not participants in the clinical study may be able to gain access to the drug, biologic, or medical device being studied.
  • No longer available: Expanded access was available for this intervention previously but is not currently available and will not be available in the future.
  • Temporarily not available: Expanded access is not currently available for this intervention but is expected to be available in the future.
  • Approved for marketing: The intervention has been approved by the U.S. Food and Drug Administration for use by the public.
 outside the clinical trial. See expanded access record.

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • California
      • Duarte, California, United States, 91010
        • City of Hope Comprehensive Cancer Center
    • Florida
      • Orlando, Florida, United States, 32827
        • Lake Nona DDU (Florida Cancer Specialists)
    • Maryland
      • Baltimore, Maryland, United States, 21201
        • University of Maryland School of Medicine (Marlene and Stewart Greenebaum Comprehensive Cancer Center)
      • Baltimore, Maryland, United States, 21231
        • Johns Hopkins University School of Medicine (Sidney Kimmel Comprehensive Cancer Center)
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Dana-Farber Cancer Institute (Head and Neck Cancer Treatment Center)
    • Missouri
      • St Louis, Missouri, United States, 63110
        • Washington University, School of Medicine
    • New York
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center
    • Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15232
        • UPMC Hillman Cancer Center
    • Texas
      • Dallas, Texas, United States, 75390
        • UT Southwestern Medical Center (Harold C. Simmons Comprehensive Cancer Center)
      • Houston, Texas, United States, 77030
        • University of Texas MD Anderson Cancer Center
    • Wisconsin
      • Madison, Wisconsin, United States, 53792
        • University of Wisconsin Carbone Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. At least 18 years of age.
  2. Histologically confirmed head and neck cancer of squamous histology not amenable to local therapy with curative intent (surgery or radiation therapy with or without chemotherapy).
  3. Documented treatment failure from at least 1 prior systemic therapy in the R/M setting, unless determined not appropriate.
  4. Measurable disease by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.
  5. Has a tumor that is dependent upon HRAS and/or PIK3CA.
  6. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1.
  7. Acceptable liver, renal, endocrine, and hematologic function.
  8. Must be able to swallow alpelisib whole tablet or oral suspension containing crushed tablets. Feeding tube may not be used for alpelisib administration.
  9. Other protocol defined inclusion criteria may apply.

Exclusion Criteria:

  1. Histologically confirmed salivary gland, thyroid, (primary) cutaneous squamous or nonsquamous histologies (eg, mucosal melanoma).
  2. Ongoing treatment with certain anticancer agents.
  3. Prior treatment (at least 1 full treatment cycle) with an FTI or PI3K, mTOR, or AKT inhibitor.
  4. Received treatment for unstable angina, myocardial infarction, and/or cerebro-vascular attack within the prior 6 months.
  5. Non-tolerable Grade 2, or ≥ Grade 3 neuropathy or evidence of unstable neurological symptoms within 4 weeks of Cycle 1 Day 1.
  6. Major surgery, other than diagnostic surgery, within 2 weeks prior to Cycle 1 Day 1, without complete recovery.
  7. Active, uncontrolled bacterial, viral, or fungal infections requiring systemic therapy.
  8. Participant with an established diagnosis of diabetes mellitus Type 1 or not controlled Type 2.
  9. Participant has impairment of gastrointestinal (GI) function or GI disease that may significantly alter the absorption of the trial drugs based on Investigator discretion.
  10. Participant has currently documented pneumonitis/interstitial lung disease.
  11. Participant has a history of severe cutaneous reaction, such as Stevens-Johnson Syndrome (SJS), Erythema Multiforme (EM), Toxic Epidermal Necrolysis (TEN), or Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS).
  12. Other protocol defined exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: PIK3CA-dependent (Cohort 1)
Adult participants with R/M HNSCC whose tumors harbor PI3KCA (activating) mutations and/or amplifications
Drug: Tipifarnib
Oral administration
Drug: Alpelisib
Oral administration
Other Names:
  • BYL719
Experimental: HRAS-dependent (Cohort 2)
Adult participants with R/M HNSCC whose tumors have increased HRAS dependency, defined as HRAS overexpression
Drug: Tipifarnib
Oral administration
Drug: Alpelisib
Oral administration
Other Names:
  • BYL719

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Dose-limiting toxicity (DLT)
Time Frame: First 28 days (1 cycle) of combination therapy
Rate of DLTs evaluated according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0. A Treatment-Emergent Adverse Event (TEAE) is an AE occurring on or after Cycle 1 Day 1 and within 30 days of the last dose of tipifarnib or alpelisib, whichever is later. Patients with multiple events are counted only once at the highest CTCAE grade.
First 28 days (1 cycle) of combination therapy
Descriptive statistics of Adverse Events (AEs)
Time Frame: From Cycle 1 Day 1 until 30 days after last trial intervention dose or 30 days after trial completion, whichever comes first, assessed up to 2 years
Descriptive statistics of Treatment-Emergent Adverse Events (TEAEs) and Serious TEAEs; AE severity will be assessed per the NCI CTCAE v 5.0. AEs are coded using the MedDRA dictionary version 28.0. A TEAE is an AE occurring on or after Cycle 1 Day 1 and within 30 days of the last dose of tipifarnib or alpelisib, whichever is later. At each level of summation (system organ class, preferred term), a patient reporting more than one adverse event is counted only once.
From Cycle 1 Day 1 until 30 days after last trial intervention dose or 30 days after trial completion, whichever comes first, assessed up to 2 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Disease control rate (DCR)
Time Frame: From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Disease control rate (CR + PR + SD)
From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Median duration of Disease Control
Time Frame: From first documentation of response until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Defined for participants with confirmed objective response as the time in months from the first documentation of response to the first documentation of disease progression by RECIST v1.1 or to death due to any cause before new anti-cancer treatment, whichever occurs first, in patients with confirmed CR/PR
From first documentation of response until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Rate of Stable Disease
Time Frame: From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Median duration of Stable Disease (SD)
Time Frame: From first documentation of response until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Defined as durable SD (>= 12 weeks) by RECIST v1.1
From first documentation of response until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Objective Response Rate (ORR)
Time Frame: From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Defined as the proportion of participants with best overall response as a confirmed complete response (CR) or confirmed partial response (PR) by RECIST v1.1. Clopper-Pearson 95% confidence intervals are calculated based on binomial distribution.
From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Median duration of response
Time Frame: From first documentation of response to first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Defined for participants with confirmed objective response as the time from the first documentation of response to the first documentation of disease progression by RECIST v1.1 or to death due to any cause before new anti-cancer treatment, whichever occurs first. Median is calculated using Kaplan-Meier method. Confidence interval for median is calculated using the Brookmeyer-Crowley method. Minimum and maximum are actual values rather than estimates.
From first documentation of response to first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 2 years
Cmax of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Maximum observed concentration following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Tmax of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Time to reach maximum observed concentration following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
AUC(0-last) of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Area under the concentration-time curve from time zero to time of last quantifiable concentration following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
AUC(tau) of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Area under the concentration-time curve during a dosage interval following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
AUC(0-infinity) of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Area under the concentration-time curve from time zero to infinity following single dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
CL/F of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Apparent total clearance of the drug following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Vd/F of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Apparent volume of distribution following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Half-life of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Time required for the amount of drug in the body to decrease by half following single dose and multiple dose administration
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Accumulation ratio of tipifarnib and alpelisib when administered in combination
Time Frame: Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Defined as the ratio of drug exposure at steady state to exposure following a single dose. For tipifarnib, the accumulation ratio was calculated as the ratio of area under the plasma concentration-time curve over the dosing interval (AUCτ) on Cycle 2 Day 1 (C2D1) to AUC from time zero to 12 hours (AUC₀-12) on Cycle 1 Day 1 (C1D1). For alpelisib, the accumulation ratio was calculated as the ratio of AUCτ on C2D1 to AUC from time zero to 24 hours (AUC₀-24) on C1D1.
Blood samples will be collected on day 1 and day 2 of Cycle 1 and Cycle 2, and on day 1 of Cycle 3 through Cycle 6. Each cycle is 28 days.
Progression-free survival (PFS)
Time Frame: From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 3 years
Defined as the time in months from C1D1 to the first documentation of disease progression or death due to any cause before new anti-cancer treatment. Median is calculated using Kaplan-Meier method. Confidence interval for median is calculated using the Brookmeyer-Crowley method. Minimum and maximum are actual values rather than estimates.
From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 3 years
Proportion of participants with PFS at 6 months
Time Frame: From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 6 months
Proportion of participants alive and without disease progression at 6 months and before new anti-cancer treatment. Survival probability and confidence interval are calculated based on Kaplan-Meier product-limit method and Greenwood's formula.
From Cycle 1 Day 1 until first documentation of disease progression, the start of new anti-cancer therapy, or death, whichever occurs first, assessed up to 6 months
Overall Survival (OS)
Time Frame: From Cycle 1 Day 1 until 3 years of treatment or death from any cause, whichever comes first
OS is the time in months from C1D1 to the date of death due to any cause. For patients with no events, OS will be censored at the last known to be alive date. Median is calculated using Kaplan-Meier method. Confidence interval for median is calculated using the Brookmeyer-Crowley method. Minimum and maximum are actual values rather than estimates.
From Cycle 1 Day 1 until 3 years of treatment or death from any cause, whichever comes first
Proportion of patients with OS at 12 months
Time Frame: From Cycle 1 Day 1 until 12 months of treatment or death from any cause, whichever comes first
Proportion of participants alive at 12 months. For patients with no events, OS will be censored at the last known to be alive date. Survival probability and confidence interval are calculated based on Kaplan-Meier product-limit method and Greenwood's formula.
From Cycle 1 Day 1 until 12 months of treatment or death from any cause, whichever comes first

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Kura Oncology, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 7, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 29, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 29, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 27, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 5, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 10, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 5, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 3, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • KO-TIP-013

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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