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Study to Assess KN3835 in the Treatment of Flexible/Semi-Flexible Hammertoe (HMT)

A Phase 3, Double-Blind, Randomized, Placebo-Controlled Study to Assess the Efficacy, Safety, and Tolerability of KN3835 vs Placebo in the Treatment of Flexible/Semi-Flexible Hammertoe

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07759362
Enrollment
554
Registered
2026-08-12
Start date
2026-08-11
Completion date
2027-12-01
Last updated
2026-09-14

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

Conditions

Flexible Hammertoe, Semi-flexible Hammertoe

Brief summary

The primary purpose of this study is to assess the efficacy, safety, and tolerability of KN3835 compared to placebo in the treatment of flexible/semi-flexible HMT.

Interventions

BIOLOGICALKN3835

Participants will receive KN3835.

OTHERPlacebo

Participants will receive placebo matching to KN3835.

Sponsors

Endo USA Inc., a Keenova Therapeutics Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Has no significant medical history or examination findings related to the foot to be treated, which in the investigator's opinion, would make the participant unsuitable for study intervention administration or study required evaluations. * If female, be of non-childbearing potential or, if of childbearing potential, be non-pregnant, non-lactating and agree to use effective contraception when with a male partner for the duration of the study and for 28 days after treatment. * Be willing and able to comply with all protocol required visits and assessments. Key

Exclusion criteria

* Has any musculoskeletal, neurosensory, other neurological or related disorder that affects the participant's use of his/her feet and/or would impair his/her completion of study assessments as determined by the investigator either due to the disorder or due to pain. * Has any significant medical condition(s), which in the investigator's opinion would make the participant unsuitable for enrollment in the study. * Has previously participated in clinical studies of KN3835 for plantar fasciitis, plantar fibromatosis, or HMT. Note: Other inclusion/

Design outcomes

Primary

MeasureTime frame
Change From Baseline to Day 57 in Flexion Contracture as Measured by GoniometerBaseline, Day 57

Secondary

MeasureTime frame
Change From Baseline to Day 57 in the Foot Function Index (FFI) Difficulty Subscale ScoreBaseline, Day 57
Change From Baseline to Day 57 in the FFI Activity Limitation Subscale ScoreBaseline, Day 57
Change From Baseline to Day 57 in the Patient Global Impression of Severity (PGIS) HMT Overall Scale ScoreBaseline, Day 57
Change From Baseline up to Day 57 in Flexion Contracture as Measured by GoniometerBaseline, up to Day 57
Percent Change From Baseline up to Day 57 in Flexion Contracture as Measured by GoniometerBaseline, up to Day 57
Change From Baseline up to Day 57 in the FFI Pain Subscale ScoreBaseline, up to Day 57
Change From Baseline up to Day 57 in the FFI Difficulty Subscale ScoreBaseline, up to Day 57
Change from Baseline up to Day 57 in the FFI Activity Limitation Subscale ScoreBaseline, up to Day 57
Change from Baseline up to Day 57 in the FFI Total scoreBaseline, up to Day 57
Change from Baseline up to Day 57 in the PGIS Foot Pain Subscale ScoreBaseline, up to Day 57
Change from Baseline up to Day 57 in the PGIS Difficulty Subscale ScoreBaseline, up to Day 57
Change from Baseline up to Day 57 in the PGIS Activity Limitation Subscale ScoreBaseline, up to Day 57
Change from Baseline up to Day 57 in the PGIS HMT Overall Scale ScoreBaseline, up to Day 57
Number of Participants With >=1 Point Improvement in the Foot Patient Global Impression of Change (PGIC) Foot Pain Subscale ScoreUp to Day 57
Number of Participants With >=1 Point Improvement in the PGIC Difficulty Subscale ScoreUp to Day 57
Number of Participants With >=1 Point Improvement in the PGIC Activity Limitation Subscale ScoreUp to Day 57
Number of Participants With >=1 Point Improvement in the PGIC HMT Overall Scale ScoreUp to Day 57
Change from Baseline in the Pain Intensity Numeric Rating Scale (NRS) ScoreUp to Day 57
Number of Participants With >=1 Point Improvement in the Clinician Global Impression of Change (CGIC) Scale ScoreUp to Day 57
Number of Participants With >=1 Point Improvement in the Subject Satisfaction with Treatment ScaleUp to Day 57
Number of Participants With a ≥ 30% reduction in Flexion Contracture as measured by GoniometryBaseline to Day 57
Number of Participants With a ≥ 50% reduction in Flexion Contracture as measured by GoniometryBaseline to Day 57
Number of Participants With TEAEsBaseline to Day 57

Countries

United States

Contacts

CONTACTClinical Operations
clinicaltrials@endo.com800-462-3636
STUDY_DIRECTORMedical Director, MD

Endo USA Inc., a Keenova Therapeutics Company

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 15, 2026