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HR+ Breast CancerPhase 1NCT07029399

A Study With NKT5097 for Adults With Advanced/Metastatic Solid Tumors

A Phase 1 study testing NKT5097 CDK2/CDK4 dual degrader, Fulvestrant and Letrozole in people with HR+ Breast Cancer and Triple Negative Breast Cancer (TNBC), run by NiKang Therapeutics, Inc. at 18 sites in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The goal of this open-label dose escalation and expansion study is to evaluate the safety and tolerability of NKT5097 in adults with advanced/metastatic tumors (emphasis on breast cancer and solid tumors with CCNE1 amplification). Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
NKT5097 CDK2/CDK4 dual degrader, Fulvestrant and Letrozole
Could I receive a placebo?
No, everyone receives an active treatment
How many people
361 participants
Where
18 sitesUnited States
Study dates
25 Mar 2025to 31 Dec 2027
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Able to provide written informed consent
  • Advanced unresectable or metastatic solid tumor (Part 1, 2 \& 3 only)
  • Advanced unresectable or metastatic HR+/HER2- breast cancer (Part 4 \& 5 only)
  • Refractory to or unable to tolerate existing therapies (Part 1, 2 \& 4 only)
  • Measurable or evaluable disease (Part 1, 2, \& 4 only).
  • Measurable disease (Part 3 \& 5 only)
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  • Eighteen years of age or older
  • ECOG status of 0 or 1
  • Adequate organ function
  • Patients with female reproductive organs must be surgically sterile, post- menopausal or willing to use effective contraception per protocol
  • Patients who are capable of insemination must be willing to use highly effective contraception and to refrain from sperm donation during treatment and for 28 days after the last dose
  • Able to swallow oral meds
  • Willing to provide tumor tissue

Who cannot join

  • Advanced solid tumor that is a candidate for curative treatment
  • History of another malignancy except for the following: adequately treated local basal cell or squamous carcinoma of the skin, in situ cervical cancer, adequately treated papillary noninvasive bladder cancer, other adequately treated Stage I or Stage II cancers currently in complete remission
  • Not recovered from the effects of prior anticancer therapy
  • Clinically significant cardiovascular event, including myocardial infarction, arterial thromboembolism, or cerebrovascular thromboembolism, within 6 months
  • Known active CNS metastases and/or carcinomatous meningitis
  • Active interstitial lung disease requiring treatment
Show all 11Show fewer
  • History of uveitis, retinopathy, or other clinically significant retinal disease
  • Major surgery within 30 days of administration of first dose
  • Active uncontrolled infectious disease
  • Significant liver disease (Child Pugh class B or C)
  • Should not have received any prior selective investigational inhibitors or degraders (Part 5 only)

Trial locations and contacts

18 sites in 1 country. Contact the study team or a site near you to ask about taking part.

18 sites in 1 country

United States18 sites, 18 recruiting
  • Dana-Farber Cancer Institute

    Boston, Massachusetts, 02115

    Dana Faber Institutional clinical.gov contact, 877-338-7425

    Antonio Giordano, MD

    Recruiting
  • Cleveland Clinic

    Cleveland, Ohio, 44195

    Cancer Answer, 216-444-7923, TaussigResearch@ccf.org

    Azka Ali, MD

    Recruiting
  • University of Texas Southwestern Medical Center

    Dallas, Texas, 75390

    Jennifer Knight, 214-645-7097, Jennifer.Knight@UTSouthwestern.edu

    Nisha Unni, MD

    Recruiting
  • Sarah Cannon Research Institute at HealthONE

    Denver, Colorado, 80218

    SCRI Contact Email, 720-754-2610, CANN.DDUDenverGeneral@SarahCannon.com

    Gerald Falchook, MD

    Recruiting
  • City of Hope

    Duarte, California, 91010

    Jenny Sanchez, 949-671-4920, jesanchez@coh.org

    Hope Rugo, MD

    Recruiting
  • NEXT Virginia

    Fairfax, Virginia, 22031

    Blake Patterson, 703-783-4505, bpatterson@nextoncology.com

    Alexander Spira

    Recruiting
  • South Texas Accelerated Research Therapeutics (START) Midwest

    Grand Rapids, Michigan, 49546

    Ashley Spagnuolo, 616.954.5552, ashley.spagnuolo@startresearch.com

    Manish Sharma

    Recruiting
  • MD Anderson Cancer Center

    Houston, Texas, 77030

    Ileana Gutierrez, 832-829-2161, ilgutierrez@mdanderson.org

    Timothy Yap, MD

    Recruiting
  • University of Iowa

    Iowa City, Iowa, 52242

    Clinical Trial Inquiry Line, 319-353-8155, kerri-fitch@uiowa.edu

    Mark Burkard, MD

    Recruiting
  • UC San Diego Moores Cancer Center

    La Jolla, California, 92037

    Cristal Martinez, 858-822-5223, cmm015@health.ucsd.edu

    Rebecca Shatsky, MD

    Recruiting
  • Comprehensive Cancer Centers of Nevada

    Las Vegas, Nevada, 89169

    Ann Lovelace, 702-609-9460, Ann.lovelace@usoncology.com

    Fadi Braiteh, MD

    Recruiting
  • West Virginia University

    Morgantown, West Virginia, 26506

    Emily Hawkins, 304-293-7375, emily.hawkins@hsc.wvu.edu

    Bei Jiang, MD, PhD

    Recruiting
  • Yale Cancer Center

    New Haven, Connecticut, 06520

    Priscilla Steve, 203-785-4069, Priscilla.Steve@yale.edu

    Adriana Kahn, MD

    Recruiting
  • UPMC Hillman Cancer Center

    Pittsburgh, Pennsylvania, 15232

    Julie Urban, 412-623-7396, IDDCReferrals@upmc.edu

    Marija Balic, MD, PhD, MBA

    Recruiting
  • South Texas Accelerated Research Therapeutics (START) San Antonio

    San Antonio, Texas, 78229

    Isabel Jimenez, 210-593-5265, isabel.jimenez@startresearch.com

    Amita Patnaik

    Recruiting
  • SCRI Florida Cancer Specialists - Sarasota

    Sarasota, Florida, 34232

    Carly Taylor, 941-377-9993, ctaylor@flcancer.com

    Judy Wang, MD

    Recruiting
  • Washington University

    St Louis, Missouri, 63110

    Katlyn Kraft, 314-747-5440, Katlyn.Kraft@wustl.edu

    Faisal Fa'ak, MD

    Recruiting
  • South Texas Accelerated Research Therapeutics (START) Mountain Region

    West Valley City, Utah, 84119

    HOPE Team, 801-907-4750, hopeteam@startresearch.com

    William McKean

    Recruiting

Other trials in United States

About this study

Official title: A Phase 1, First-in-Human, Open-Label Study to Evaluate the Safety, Tolerability, PK, and Preliminary Anti-tumor Activity of the Novel Oral Selective CDK2/CDK4 Dual Degrader NKT5097 in Adults With Advanced/Metastatic Solid Tumors

The goal of this open-label dose escalation and expansion study is to evaluate the safety and tolerability of NKT5097 in adults with advanced/metastatic tumors (emphasis on breast cancer and solid tumors with CCNE1 amplification). Main questions to answer include:

  • What is the recommended dose for expansion and/or Phase 2, for both monotherapy and in combination with ET
  • What medical issues/symptoms do participants experience when taking NKT5097 as monotherapy as well as in combination with ET
Read the detailed description

This First-in-Human, Open-Label Study to Evaluate the Safety, Tolerability, PK, and Preliminary Anti-tumor Activity of NKT5097, a novel dual protein degrader of CDK2 and CDK4, is split into 3 Parts:

Part 1: Monotherapy Dose Escalation in selected advanced/metastatic non-CNS primary solid tumors will be enrolled based on a projected total of 5 dose levels

Part 2: Food Effect Analysis: Subjects with solid tumors (as noted in Part 1) will be enrolled (by backfilling selected dose cohorts) to evaluate the effect of dosing with food on NKT5097.

Part 3: Monotherapy Tumor-specific Expansion: Subjects may be enrolled (by backfilling selected dose cohorts) into each selected tumor-specific cohort. One or more of these cohorts may be opened at the discretion of the Sponsor in consultation with the DEC

Part 4: Combination Dose Escalation with ET in selected HR+/HER2- breast cancer will be enrolled based on a projected 2 dose levels

Part 5: Combination Dose Expansion with ET in HR+/HER2- breast cancer in one or more various cohorts

In addition to the above, the study will explore pharmacokinetics, various pharmacodynamic biomarkers, gene mutations, and tumor responses such as PFS and DOR.

Being tested
NKT5097 CDK2/CDK4 dual degrader, Fulvestrant, Letrozole
Keywords
CCNE1, cyclin E1, triple negative breast cancer, TNBC, estrogen receptor positive, HER2-, breast cancer, post CDK4/6i, HER2 expression, Fulvestrant, Letrozole, endocrine therapy, refractory, endocrine resistant, endocrine sensitivity, metastatic
Medical subject headings
Triple Negative Breast Neoplasms, Breast Neoplasms, Neoplasm Metastasis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • NKT5097 CDK2/CDK4 dual degraderDrug

    NKT5097 will be distributed in tablet form and dosed daily or twice a day

  • FulvestrantDrug

    Fulvestrant will be administered as an injection and dosed on C1D1, C1D15 and Day 1 of every cycle thereafter.

  • LetrozoleDrug

    Letrozole will be administered orally once daily.

Study groups in NCT07029399
Study groupRoleWhat they receive
Part 1 Dose EscalationExperimentalEscalation of orally administered NKT5097
Receives: Drug: NKT5097 CDK2/CDK4 dual degrader
Part 2 Food EffectExperimentalOrally administered NKT5097 with and without meal
Receives: Drug: NKT5097 CDK2/CDK4 dual degrader
Part 3 ExpansionExperimentalExpansion of dose levels based upon safety and PK following Part 1 escalation.
Receives: Drug: NKT5097 CDK2/CDK4 dual degrader
Part 4 Combination Dose EscalationExperimentalEscalation of orally administered NKT5097 in combination with Endocrine Therapy (ET)
Receives: Drug: NKT5097 CDK2/CDK4 dual degrader; Drug: Fulvestrant; Drug: Letrozole
Part 5 Combination ExpansionExperimentalExpansion of dose levels based upon safety and PK following Part 4 escalation
Receives: Drug: NKT5097 CDK2/CDK4 dual degrader; Drug: Fulvestrant; Drug: Letrozole

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence of dose-limiting toxicities as Assessed by CTCAE

    Measured: From enrollment through end of safety monitoring period of 28 days from first dose

Secondary outcomes (9)
  1. Incidence of adverse events (AEs) as defined by CTCAE Version 5

    Measured: From enrollment through end of treatment up to 2 years

  2. Maximum concentration Cmax after a single dose and multiple doses

    Measured: Day 1 and Day 15 of Cycle 1 (Cycle 1 is 28 days)

  3. Area under the concentration-time curve (AUC last) after a single dose and multiple doses from first dose through the last timepoint with quantifiable concentration (Tlast)

    Measured: Day 1 and Day 15 of Cycle 1 ((Cycle 1 is 28 days)

  4. Maximum concentration (Cmax) when dosed with and without food

    Measured: Day 1 and Day 2 of Cycle 1 (Cycle 1 is 28 days)

  5. Area under the concentration-time curve (AUC last) when dosed with and without food from dosing through the last timepoint with quantifiable concentration (Tlast)

    Measured: Day 1 through Day 3 of Cycle 1 (Cycle 1 is 28 days)

  6. Time to maximum plasma concentration (Tmax) after a single dose and multiple doses

    Measured: Day 1 through Day 3 and Day 15 of Cycle 1 (Cycle 1 is 28 days)

  7. Investigator-assessed ORR by RECIST v1.1

    Measured: From enrollment (Day 1) through end of treatment (up to 3 years) with an average of 4 months

  8. Investigator-assessed PFS by RECIST v1.1

    Measured: From enrollment (Day 1) through end of treatment (up to 3 years) with an average of 4 months

  9. Duration of Response (DOR)

    Measured: From enrollment (Day 1) through end of treatment (up to 3 years) with an average of 4 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Jun 2025
  2. Study start25 Mar 2025
  3. Primary completion31 Jul 2027 (estimated)
  4. Study completion31 Dec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
361 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07029399
Sponsor's protocol ID
NKT5097-101
Status last verified
Aug 2026
First submitted
28 May 2025
Last updated
28 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing NKT5097 CDK2/CDK4 dual degrader, Fulvestrant and Letrozole in people with HR+ Breast Cancer and Triple Negative Breast Cancer (TNBC), run by NiKang Therapeutics, Inc. at 18 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 13 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 28 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 18 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Sponsor Contact (302-596-8654, clinicaltrials@nikangtx.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence of dose-limiting toxicities as Assessed by CTCAE (time frame: From enrollment through end of safety monitoring period of 28 days from first dose). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Aug 2026.

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