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rilzabrutinib SAR444671

Phase 1

Undisclosed | Small molecule | Other |Sanofi|Trials Updated: Sep 23, 2025

rilzabrutinib SAR444671 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Feb 2021

rilzabrutinib SAR444671 target and mechanism

Molecular targetBTK
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment24

FDA Designations

No designations recorded

rilzabrutinib SAR444671 clinical trials

rilzabrutinib SAR444671 · 1 trial · 1 indication

Phase 1 1
NCT04748926Food Effect and Relative Bioavailability Study of Rilzabrutinib in Healthy ParticipantsHealthy Volunteers
COMPLETED24 Analytics
PHASE1COMPLETED
Food Effect and Relative Bioavailability Study of Rilzabrutinib in Healthy Participants
Healthy VolunteersUnlock trial analytics

Study Endpoints

Primary Endpoints

Rilzabrutinib plasma PK parameters following administration of the reference formulation in the fed and fasted states: Cmax
From Day 1 to Day 7

maximun plasma concentration

Rilzabrutinib plasma PK parameters following administration of the reference formulation in the fed and fasted states: Tmax
From Day 1 to Day 7

time to maximum plasma concentration

Rilzabrutinib plasma PK parameters following administration of the reference formulation in the fed and fasted states: AUC0-last
From Day 1 to Day 7

area under the plasma concentration-time curve from zero to the last measurable concentration

Rilzabrutinib plasma PK parameters following administration of the reference formulation in the fed and fasted states: AUC0-inf
From Day 1 to Day 7

area under the plasma concentration-time curve from zero to infinity

Rilzabrutinib plasma PK parameters following administration of the reference formulation in the fed and fasted states: half-life
From Day 1 to Day 7

terminal elimination phase half-life

Rilzabrutinib plasma PK parameters following administration of two test formulations in the fasted state: Cmax
From Day 11 to Day 12

maximun plasma concentration

Rilzabrutinib plasma PK parameters following administration of two test formulations in the fasted state: Tmax
From Day 11 to Day 12

time to maximum plasma concentration

Rilzabrutinib plasma PK parameters following administration of two test formulations in the fasted state: AUC0-last
From Day 11 to Day 12

area under the plasma concentration-time curve from zero to the last measurable concentration

Rilzabrutinib plasma PK parameters following administration of two test formulations in the fasted state: AUC0-inf
From Day 11 to Day 12

area under the plasma concentration-time curve from zero to infinity

Rilzabrutinib plasma PK parameters following administration of two test formulations in the fasted state: half-life
From Day 11 to Day 12

terminal elimination phase half-life

Secondary Endpoints

Treatment-emergent AE and treatment-emergent SAE
Until Day 15
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeOTHER

Treatment Arms

ArmTypeDescription
Group 1EXPERIMENTALParticipants will receive caplets after fast (treatment A) on Day 1 and caplets after meal (treatment B) on day 6, and then receive either oral formulation 1 tablets after fast (treatment C) or oral formulation 2 tablets after fast (treatment D) on day 11.
Group 2EXPERIMENTALParticipants will receive caplets after meal (treatment B) on Day 1 and caplets after fast (treatment A) on day 6, and then receive either oral formulation 1 tablets after fast (treatment C) or oral formulation 2 tablets after fast (treatment D) on day 11.

Interventions

NameTypeDescription
rilzabrutinib SAR444671DRUGPharmaceutical form: caplet Route of administration: oral
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion criteria : \- Participants who are overtly healthy as determined by medical evaluation * Body mass index (BMI) within the range ≥18 and ≤31 kg/m2 (inclusive) and a minimum body weight of 45 kg. * Female participant is eligible to participate if she is not pregnant or breastfeeding * Male...

Countries:Australia
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Frequently asked questions about rilzabrutinib SAR444671

What is rilzabrutinib SAR444671?

Rilzabrutinib, also known as SAR444671, is an investigational small molecule drug developed by Sanofi. It is being studied in clinical development and has been evaluated in a Phase 1 trial. Its therapeutic indications have not been publicly disclosed.

What does rilzabrutinib SAR444671 target?

Rilzabrutinib SAR444671 targets Bruton's tyrosine kinase, or BTK. It acts as a BTK inhibitor, meaning it is designed to block the activity of this enzyme. BTK is a signaling molecule involved in certain immune and inflammatory pathways.

Who makes rilzabrutinib SAR444671?

Rilzabrutinib SAR444671 is developed by Sanofi, which trades under the ticker SNY. Sanofi is the company responsible for advancing the drug through clinical development.

What phase is rilzabrutinib SAR444671 in?

Rilzabrutinib SAR444671 is in Phase 1 clinical development. It is an investigational drug and is not approved by the FDA. The Phase 1 program has included a completed study in healthy volunteers.

What clinical trials is rilzabrutinib SAR444671 in?

Rilzabrutinib SAR444671 has been studied in the Phase 1 trial NCT04748926, titled Food Effect and Relative Bioavailability Study of Rilzabrutinib in Healthy Participants. That trial was completed and enrolled 24 healthy volunteers in Australia. It was a controlled, randomized study without blinding.

Is rilzabrutinib the same as SAR444671?

Yes, rilzabrutinib and SAR444671 refer to the same drug. SAR444671 is an alternate designation used for rilzabrutinib, which is developed by Sanofi. Both names identify the same investigational BTK inhibitor.