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Selenomethionine

Phase 1

Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC) | Small molecule | Oncology |Pfizer, Inc.|Last Updated: May 6, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment45

FDA Designations

No designations recorded

Clinical trial landscape

Selenomethionine · 1 trial · 1 indication

Phase 1 1
NCT02535533SLM + Axitinib for Clear Cell RCCAdvanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC)
COMPLETED45 Analytics
PHASE1COMPLETED
SLM + Axitinib for Clear Cell RCC
Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC)Unlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Adverse Events (AE) Per CTCAE 4.03
After 2 cycles (28 days)

The AEs will be summarized and classified by body system and by treatment group. The type, incidence, severity, and causality of each AE, the duration of the event, and any required treatment interventions will be tabulated.

Pilot Phase - Determine Dose-concentration Relationship and Estimate the Effective Dose of SLM (Informed by Preclinical Data) Using the Continual Reassessment Method (CRM).
14 days

Dose escalation for this pilot study will be conducted using a CRM in which the probability of exceeding a blood selenium concentration of 45 µM on Day 14 is being modeled. Prior probabilities of exceeding a blood selenium concentration of 45 µM on Day 14 were estimated based on preclinical and preliminary data from the initial trial. A one parameter logistic model with intercept set at 3 and an initial value of 1 for the slope will be used to estimate the dose-concentration relationship through sequential recursive Bayesian assessment. The target probability of exceeding 45 µM is ≤20%.

Secondary Endpoints

Overall Response Rate
From treatment initiation to treatment end, up to 3 years
Progression-Free Survival
From treatment initiation up to 2 years
Overall Survival
From treatment initiation up to 3 years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Study TreatmentEXPERIMENTALDuring the Dose-Escalation Part 1, patients will receive SLM twice daily for 14 days followed by SLM once daily in combination with axitinib 5 mg twice daily with titration according to package insert. Treatment will continue until disease progression or unacceptable toxicity. During the Expansion Part 2, patients will be treated at the maximum tolerated dose (MTD) of SLM determined as 4000 mcg SLM. SLM will be given orally twice daily for 14 days followed by SLM once daily in combination with axitinib 5 mg twice daily with titration according to package insert. Treatment will continue until disease progression or unacceptable toxicity. During the Pilot Phase, dosing will begin at dose level 3 (4000, 5000, or 6000 mcg SLM calculated based on patients' BSA). SLM will be given orally twice daily for 14 days. Each cohort will enroll 2 evaluable patients.

Interventions

NameTypeDescription
Selenomethionine (SLM)DRUGSLM administrated orally twice daily for 14 days followed by SLM once daily in combination with Axitinib 5 mg twice daily with titration according to package insert
AxitinibDRUGFollowing SLM administrated orally twice daily for 14 days, SLM once daily in combination with Axitinib 5 mg twice daily with titration according to package insert
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: Each patient must meet all of the following criteria to be enrolled in this study: * Histologically and radiologically confirmed advanced metastatic CCRCC in patients who have had at least one prior systemic therapy, which can include axitinib for the dose escalation part. In t...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMJun 6, 2026NCT02535533TRIAL_REMOVED: changed
MEDIUMJun 6, 2026NCT02535533TRIAL_REMOVED: changed

Frequently asked questions about Selenomethionine

What is Selenomethionine used for in Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC)?

Selenomethionine is an investigational small molecule being studied for the treatment of Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC). It is being evaluated in combination with axitinib in a Phase 1 clinical trial. The drug is not yet approved and remains in clinical development.

Who makes Selenomethionine?

Selenomethionine is being developed by Pfizer, Inc., which trades under the ticker symbol PFE. The company is conducting clinical research on this investigational small molecule for the treatment of Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC).

What phase is Selenomethionine in?

Selenomethionine is in Phase 1 clinical development. It is an investigational drug being studied for Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC). The drug is not FDA approved and is still undergoing clinical trials to evaluate its safety and efficacy.

What clinical trials is Selenomethionine in?

Selenomethionine has one completed clinical trial, NCT02535533, titled 'SLM + Axitinib for Clear Cell RCC'. This Phase 1 study enrolled 45 participants with Advanced Metastatic Clear Cell Renal Cell Carcinoma (CCRCC) in the United States. The trial was uncontrolled and not randomized or double-blinded.

Is Selenomethionine the same as SLM?

Yes, Selenomethionine is referred to as SLM in clinical trial documentation. The Phase 1 trial NCT02535533 is titled 'SLM + Axitinib for Clear Cell RCC', confirming that SLM is the abbreviation used for Selenomethionine in this research context.