Skip to content

Dose Escalation and Expansion Study of SAR443216 in Participants With Relapsed/Refractory HER2 Expressing Solid Tumors

A Phase 1/1b Open-label, First-in-human, Single Agent, Dose Escalation and Expansion Study for the Evaluation of Safety, Pharmacokinetics, Pharmacodynamics, and Anti-tumor Activity of SAR443216 in Participants With Relapsed/Refractory HER2 Expressing Solid Tumors.

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05013554
Enrollment
44
Registered
2021-08-19
Start date
2021-08-16
Completion date
2024-01-15
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer, Gastric Cancer, Lung Neoplasm Malignant, Neoplasm, Neoplasm Malignant

Brief summary

Primary Objectives: Part 1 (Dose Escalation) * To determine the MTD/maximum administered dose (MAD) of SAR443216 administered as a single agent in participants with HER2 expressing solid tumors and determine the RD(s) for intravenous (IV) and subcutaneous (SC) administration in the dose escalation part. * To determine the safety of SAR443216 after intravenous (IV) and subcutaneous (SC) administration. Part 2 (Dose expansion) • To assess preliminary clinical activity of single agent SAR443216 at the RD(s) in participants with HER2 expressing solid tumors, with various levels of HER2 expression. Secondary Objectives: Part 1 • To assess preliminary clinical activity of single agent SAR443216 after IV and SC administration at the RD(s) in participants with HER2 expressing solid tumors, with various levels of HER2 expression. Part 2 • To determine the safety of SAR443216. Part 1 and 2 * To characterize the pharmacokinetic (PK) profile of SAR443216 when administered as a single agent after IV and SC (Part 1 only) administration. * To evaluate the immunogenicity of SAR443216 after IV and SC administration. * To assess preliminary clinical activity of single agent SAR443216 at the RD(s) in participants with HER2 expressing solid tumors, with various levels of HER2 expression.

Detailed description

The expected duration of study intervention for participants may vary, based on progression date; median expected duration of study per participant is estimated to be: * 7.5 months (up to 1 month for screening, a median of 3.5 months for treatment, and a median of 3 months for long term follow-up) in escalation. * 9.5 months (up to 1 month for screening, a median of 5.5 months for treatment, and a median of 3 months for long term follow-up) in expansion.

Interventions

DRUGSAR443216 IV

Pharmaceutical form: Powder for solution; Route of administration: IV infusion

DRUGSAR443216 SC

Pharmaceutical form: Powder for solution; Route of administration: SC injection

Sponsors

Sanofi
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Participants must be ≥ 18 years of age * Histologically or cytologically confirmed diagnosis of metastatic solid tumors * Eastern Cooperative Oncology Group (ECOG) performance status 0-1 * All participants should have at least 1 measurable disease per RECIST v1.1. An irradiated lesion can be considered measurable only if progression has been demonstrated on the irradiated lesion. * Body weight within \[45 - 150 kg\] (inclusive) * All Contraceptive use by men and women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. * Capable of giving signed informed consent

Exclusion criteria

* Any clinically significant cardiac disease * History of or current interstitial lung disease or pneumonitis * Uncontrolled or unresolved acute renal failure * Prior solid organ or hematologic transplant. * Known positivity with human immunodeficiency virus (HIV), known active hepatitis A, B, and C, or uncontrolled chronic or ongoing infectious requiring parenteral treatment. * Receipt of a live-virus vaccination within 28 days of planned treatment start * Participation in a concurrent clinical study in the treatment period. * Inadequate hematologic, hepatic and renal function * Participant not suitable for participation, whatever the reason, as judged by the Investigator, including medical or clinical conditions. The above information is not intended to contain all considerations relevant to the potential participation in a clinical trial.

Design outcomes

Primary

MeasureTime frameDescription
Part 1: Dose Escalation Determine the MTD/maximum administered dose (MAD) and RD(s) of SAR443216Cycle 1, cycle duration is 28 days for 2-week lead-in schedule and 35 days for 3-week lead-in scheduleIncidence of study dose limiting toxicities (DLTs)
Part 1: Dose Escalation: Safety of SAR443216Baseline until end of study, up to approximately 7.5 monthsIncidence of treatment emergent adverse events (TEAEs), serious adverse events (SAEs), and lab abnormalities according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0.
Part 2: Dose Expansion Objective response rate (ORR) of SAR443216 in all participantsFrom date of enrollment until the end of treatment, up to approximately 5.5 monthsObjective response rate is defined as the proportion of participants who achieve a complete response (CR) or partial response (PR) per RECIST v1.1.
Part 2: Dose Expansion Duration of response (DoR) of SAR443216 in all participants.From date of enrollment until the end of treatment, up to approximately 5.5 monthsDuration of response per RECIST v1.1 is defined as the interval from the first documentation of CR or PR to the earlier of the first documentation of definitive disease progression or death due to any cause, whichever occurs first.

Secondary

MeasureTime frameDescription
Part 1 and Part 2: Pharmacokinetic Parameter: Cmax of SAR443216From date of enrollment until the end of treatment, up to approximately 3.5 months for Part 1 and 5.5 months for Part 2Maximum observed plasma concentration
Part 1 and Part 2: Pharmacokinetic Parameter: Ctrough of SAR443216From date of enrollment until the end of treatment, up to approximately 3.5 months for Part 1 and 5.5 months for Part 2Plasma concentration observed just before treatment administration during repeated dosing
Part 1: Objective response rate (ORR) of SAR443216 in all participantsFrom date of enrollment until the end of treatment, up to approximately 3.5 monthsObjective response rate is defined as the proportion of participants who achieve a complete response (CR) or partial response (PR) per RECIST v1.1.
Part 1 and Part 2: Pharmacokinetic Parameter: AUC0-τ of SAR443216From date of enrollment until the end of treatment, up to approximately 3.5 months for Part 1 and 5.5 months for Part 2Area under the plasma concentration versus time curve
Part 1 and Part 2: Evaluation of SAR443216 immunogenicityFrom date of enrollment until the end of treatment, up to approximately 3.5 months for Part 1 and 5.5 months for Part 2Incidence of ADA induction and ADA persistence
Part 1 and Part 2: Pharmacokinetic Parameter: t 1/2 of SAR443216From date of enrollment until the end of treatment, up to approximately 3.5 months for Part 1 and 5.5 months for Part 2Terminal half-life associated with the terminal slope (λz)
Part 1: Duration of response (DoR) of SAR443216 in all participantsFrom date of enrollment until the end of treatment, up to approximately 3.5 monthsDuration of response per RECIST v1.1 is defined as the interval from the first documentation of CR or PR to the earlier of the first documentation of definitive disease progression or death due to any cause, whichever occurs first
Part 1 and Part 2: Progression Free Survival (PFS)From date of enrollment until the end of treatment, up to approximately 3.5 months for Part1 and 5.5 months for Part 2Progression free survival (PFS) will be assessed by the Investigator per RECIST v1.1 and will be summarized using the Kaplan-Meier method
Part 2: Safety of SAR443216Baseline until the end of the study, up to approximately 9.5 monthsNumber of participants with treatment emergent adverse events (TEAEs), serious adverse events (SAEs), and lab abnormalities according to NCI CTCAE Version 5.0

Countries

Belgium, France, South Korea, Spain, Taiwan, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026