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SOLIS-1

Not yet recruitingPhase 2

A Study of PF-08653945 and PF-08653944 in Adults With Overweight or Obesity (SOLIS-1)

A PHASE 2B, RANDOMIZED, PLACEBO-CONTROLLED, DOUBLE-BLIND, DOSE RANGING, DOSE-FINDING, UMBRELLA STUDY TO EVALUATE EFFICACY AND SAFETY OF PF-08653945 AND PF-08653944, ALONE OR IN COMBINATION, IN ADULTS WITH OVERWEIGHT OR OBESITY (SOLIS-1)

Lead sponsor

Pfizer

Asset

MET097 / PF-08653944

Subcutaneous · GLP-1 agonist

Listed sites

3

Recruiting sites

Enrollment

872

estimated

Study population

Obesity / overweight

Key I/E criterion

BMI 30-50

Primary endpoint

Body weight

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT07575932
Org study IDC6511002
Secondary IDSOLIS-1Alias Study Number

Timeline

Milestones

Study first posted2026-05-08actual
Last update posted2026-05-08actual
Study start2026-05-11estimated
Primary completion2027-08-04estimated
Study completion2028-01-05estimated

Assets

Investigational agents

Study populations

Who this study enrolls

Obesity / overweight

Eligibility

Who can enroll

Minimum age18 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

Eligible participants for this study include:

adults aged 18 years or older with
obesity (BMI of 30.0 kg/m2 to 50.0 kg/m2) or with
overweight (BMI of 27.0 kg/m2 to <30.0 kg/m2) who also have at least 1 prespecified weight-related comorbidity (hypertension, dyslipidemia, cardiovascular disease, or obstructive sleep apnea), at the screening visit.

Exclusion criteria

Participants who are not eligible include those with diabetes mellitus, a body weight change of >5% or use of weight loss medications in the 12 weeks prior to screening, a history of or plan for surgical treatment for obesity, and those who are unable or unwilling to comply with contraceptive requirements or are pregnant or lactating.

Endpoints (9)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Weight & body composition
8
Safety / tolerability / PK
1

Weight & body composition

8 endpoints
Primary/protocol endpoint

Percent change from baseline in body weight

Time frame:Baseline (Week 0) to Week 48

percent change from baseline, improvement

Secondary/protocol endpoint

Percent change from baseline in body weight

Time frame:Baseline (Week 0) to Week 60

percent change from baseline, improvement

Secondary/protocol endpoint

Change from baseline in body weight

Time frame:Baseline (Week 0) to Week 48 and Week 60

change from baseline, improvement

Secondary/protocol endpoint

Percentage of participants who achieve ≥5% of body weight reduction from baseline

Time frame:Baseline (Week 0) to Week 48 and Week 60

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of participants who achieve ≥10% of body weight reduction from baseline

Time frame:Baseline (Week 0) to Week 48 and Week 60

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of participants who achieve ≥15% of body weight reduction from baseline

Time frame:Baseline (Week 0) to Week 48 and Week 60

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of participants who achieve ≥20% of body weight reduction from baseline

Time frame:Baseline (Week 0) to Week 48 and Week 60

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of participants who achieve ≥25% of body weight reduction from baseline

Time frame:Baseline (Week 0) to Week 48 and Week 60

threshold achievement, improvement

Safety / tolerability / PK

1 endpoint
Secondary/protocol endpoint

Number of participants with treatment emergent adverse events (TEAEs) and serious adverse events (SAEs)

Time frame:Up to Week 70

event count, event

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.