A PHASE 2 TRIAL TO EVALUATE THE SAFETY AND EFFICACY OF NKT2152 IN COMBINATION WITH PALBOCICLIB (DOUBLET) AND WITH PALBOCICLIB AND SASANLIMAB (TRIPLET) IN SUBJECTS WITH ADVANCED OR METASTATIC CLEAR CELL RENAL CELL CARCINOMA

The goal of the Lead-in phase of the study is to evaluate the safety, efficacy,
pharmacokinetics (PK) and determine recommended dose for expansion (RDE) of NKT2152 in
combination with palbociclib (Doublet) and with palbociclib and sasanlimab (Triplet) in
subjects with advanced or metastatic clear cell renal cell carcinoma (ccRCC) who received
prior therapy. The goal of the Expansion phase of the study is to evaluate the safety,
efficacy, PK at the selected RDE and identify the RP2D for NKT2152 in combination with
palbociclib (Doublet) and with palbociclib and sasanlimab (Triplet) in subjects with
advanced or metastatic clear cell renal cell carcinoma (ccRCC) who received prior
therapy.

Inclusion Criteria:

- Must have locally advanced or metastatic ccRCC and have progressed or relapsed after
at least 1 prior anti-VEGF/VEGFR systemic therapy and 1 ICI.

- Measurable disease per the Response Evaluation Criteria in Solid Tumors version 1.1
(RECIST 1.1)

- KPS score of at least 70%

- Able to swallow oral medications.

Exclusion Criteria:

- Active CNS metastases and/or carcinomatous meningitis

- Has had any major cardiovascular event within 6 months or clinically significant
cardiovascular disease

- Major surgery (eg, GI surgery, removal or biopsy of brain metastasis) within 3
months before administration of study drug.

- Has known HIV

- History of hepatitis B or known active hepatitis C infection

- Has received prior treatment with NKT2152, other HIF2α inhibitors, other CDK 4/6
inhibitors, palbociclib, or sasanlimab

- Radiation therapy for bone metastasis within 2 weeks, or any other external
radiation therapy within 4 weeks before administration of the first dose of study
treatment

- Corrected QT interval calculated by Fridericia formula (QTcF) > 480 ms within 28
days prior to first dose

- Hypoxia or requires intermittent or chronic supplemental oxygen or any chronic lung
condition which has required supplemental oxygen in the past

- Has a history of interstitial lung disease

- Has any active or recent history of a known or suspected autoimmune disease