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COLLAGENASE CLOSTRIDIUM HISTOLYTICUM

Phase 2

Edematous Fibrosclerotic Panniculopathy | Monoclonal antibody | Dermatology |BrainsWay Ltd.|Last Updated: Sep 30, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials2
Total Enrollment474

FDA Designations

No designations recorded

Clinical trial landscape

COLLAGENASE CLOSTRIDIUM HISTOLYTICUM · 6 trials · 7 indications

Phase 2 5Phase 1 1
NCT06169319A Study to Assess Collagenase Clostridium Histolyticum (CCH) in the Treatment of Plantar Fasciitis (PFA)Plantar Fasciitis
COMPLETED231 Analytics
NCT03632993Injection Techniques of Collagenase Clostridium Histolyticum (CCH) for the Treatment of EFP (Cellulite)Edematous Skin
COMPLETED64 Analytics
NCT02724644EN3835 for the Treatment of Edematous Fibrosclerotic Panniculopathy (Commonly Known as Cellulite)Edematous Fibrosclerotic Panniculopathy
COMPLETED375 Analytics
NCT02193828Phase 2a Dose-Ranging Study to Evaluate Safety and Effectiveness of AA4500 in Treatment of Dupuytren's Disease NodulesDupuytren's Disease
COMPLETED76 Analytics
NCT02006719Clinical Study for the Treatment of Adhesive Capsulitis of the ShoulderAdhesive Capsulitis
COMPLETED322 Analytics
PHASE2COMPLETED
A Study to Assess Collagenase Clostridium Histolyticum (CCH) in the Treatment of Plantar Fasciitis (PFA)
Plantar FasciitisUnlock trial analytics
PHASE2COMPLETED
Injection Techniques of Collagenase Clostridium Histolyticum (CCH) for the Treatment of EFP (Cellulite)
Edematous SkinUnlock trial analytics
PHASE2COMPLETED
EN3835 for the Treatment of Edematous Fibrosclerotic Panniculopathy (Commonly Known as Cellulite)
Edematous Fibrosclerotic PanniculopathyUnlock trial analytics
PHASE2COMPLETED
Phase 2a Dose-Ranging Study to Evaluate Safety and Effectiveness of AA4500 in Treatment of Dupuytren's Disease Nodules
Dupuytren's DiseaseUnlock trial analytics
PHASE2COMPLETED
Clinical Study for the Treatment of Adhesive Capsulitis of the Shoulder
Adhesive CapsulitisUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from Baseline at Week 12 in the Weekly Mean of the Average Daily (24-hour) Pain (ADP) Score as Measured on the Pain Intensity Numeric Rating Scale (NRS)
Baseline, Week 12
Aesthetic Appearance Improvement Likert Scores by Treatment Region at Day 22
Day 22

Aesthetic appearance improvement for each treatment area (buttocks or thighs) was assessed by a blinded central assessment, using a 5-point Likert scale with scores ranging from -1 to 3. Aesthetic improvement was scored as worse (-1), stayed the same (0), improved (1), much improved (2) and very much improved (3). The assessor evaluated the image at Day 22 in comparison with baseline and recorded the Likert score. Aesthetic appearance Likert scale scores were analyzed using linear mixed model with treatment arm, study visit, interaction of treatment arm and study visit as fixed effects. This model was fitted using the response for the average of left and right of treatment area (that is, average of left buttock and right buttock or average of left thigh and right thigh).

Aesthetic Appearance Improvement Likert Scores by Treatment Region at Day 43
Day 43

Aesthetic appearance improvement for each treatment area (buttocks or thighs) was assessed by a blinded central assessment, using a 5-point Likert scale with scores ranging from -1 to 3. Aesthetic improvement was scored as worse (-1), stayed the same (0), improved (1), much improved (2) and very much improved (3). The assessor evaluated the image at Day 43 in comparison with baseline and recorded the Likert score. Aesthetic appearance Likert scale scores were analyzed using linear mixed model with treatment arm, study visit, interaction of treatment arm and study visit as fixed effects. This model was fitted using the response for the average of left and right of treatment area (that is, average of left buttock and right buttock or average of left thigh and right thigh).

Aesthetic Appearance Improvement Likert Scores by Treatment Region at Day 71
Day 71

Aesthetic appearance improvement for each treatment area (buttocks or thighs) was assessed by a blinded central assessment, using a 5-point Likert scale with scores ranging from -1 to 3. Aesthetic improvement was scored as worse (-1), stayed the same (0), improved (1), much improved (2) and very much improved (3). The assessor evaluated the image at Day 71 in comparison with baseline and recorded the Likert score. Aesthetic appearance Likert scale scores were analyzed using linear mixed model with treatment arm, study visit, interaction of treatment arm and study visit as fixed effects. This model was fitted using the response for the average of left and right of treatment area (that is, average of left buttock and right buttock or average of left thigh and right thigh).

Change From Baseline in Dimple Depth Depression (Hexsel CSS [B]) by Treatment Region at Day 22
Baseline, Day 22

Dimple depth depression for each treatment area was assessed by the Investigator using the Hexsel Cellulite Severity Scale (B). Dimple Depth Depression of Hexsel Cellulite Severity Scale (B) was assessed and graded as: no depression (0), superficial depressions (1), medium depth depressions (2) and deep depressions (3). A negative change in Hexsel CSS (B) from baseline indicated an improvement in depression depth. Change from Baseline in dimple depth depression of Hexsel Cellulite Severity Scale (B) was analyzed using linear mixed model with treatment arm, study visits, interaction of treatment arm and study visit as fixed effect. This model was fitted using the response for the average of left and right of treatment areas (that is, average of left buttock and right buttock; average of left thigh and right thigh)

Change From Baseline in Dimple Depth Depression (Hexsel CSS [B]) by Treatment Region at Day 43
Baseline, Day 43

Dimple depth depression for each treatment area was assessed by the Investigator using the Hexsel Cellulite Severity Scale (B). Dimple Depth Depression of Hexsel Cellulite Severity Scale (B) was assessed and graded as: no depression (0), superficial depressions (1), medium depth depressions (2) and deep depressions (3). A negative change in Hexsel CSS (B) from baseline indicated an improvement in depression depth. Change from Baseline in dimple depth depression of Hexsel Cellulite Severity Scale (B) was analyzed using linear mixed model with treatment arm, study visits, interaction of treatment arm and study visit as fixed effect. This model was fitted using the response for the average of left and right of treatment areas (that is, average of left buttock and right buttock; average of left thigh and right thigh)

Change From Baseline in Dimple Depth Depression (Hexsel CSS [B]) by Treatment Region at Day 71
Baseline, Day 71

Dimple depth depression for each treatment area was assessed by the Investigator using the Hexsel Cellulite Severity Scale (B). Dimple Depth Depression of Hexsel Cellulite Severity Scale (B) was assessed and graded as: no depression (0), superficial depressions (1), medium depth depressions (2) and deep depressions (3). A negative change in Hexsel CSS (B) from baseline indicated an improvement in depression depth. Change from Baseline in dimple depth depression of Hexsel Cellulite Severity Scale (B) was analyzed using linear mixed model with treatment arm, study visits, interaction of treatment arm and study visit as fixed effect. This model was fitted using the response for the average of left and right of treatment areas (that is, average of left buttock and right buttock; average of left thigh and right thigh)

Percentage of Composite Responders of at Least 2-Level Improvement of Severity
Baseline, Day 71

Percentage of composite responders defined as subjects with an improvement from baseline of at least 2-levels of severity on each, the Clinician-Reported Photonumeric Cellulite Severity Scale (CR-PCSS) and Patient-Reported Photonumeric Cellulite Severity Scale (PR-PCSS), at Day 71 in the ITT population. The CR-PCSS is a photonumeric scale that was used by the Investigator to evaluate cellulite ranging from 0 (none), 1 (almost none), 2 (mild), 3 (moderate), to 4 (severe). The PR-PCSS is a photonumeric scale that was used by the subjects to evaluate cellulite ranging from 0 (none), 1 (almost none), 2 (mild), 3 (moderate), to 4 (severe). A 2-level improvement on each scale for example would represent a change from a 4 (severe) to a 2 (mild). In order to be considered a responder a subject needs to have at least a 2-level improvement on both scales.

Percent Change From Baseline in Surface Area and Volume of the Treated Nodule at Day 57 Using Caliper Measurements
Baseline, Day 57

Percent change from baseline in surface area and volume of the treated nodule was determined from hand-held caliper measurements of the length and width of the nodule. Percent change = 100\*(Day 57 area \[or volume\] - baseline area \[or volume\])/baseline area \[or volume\]. A negative value represents the improvement from baseline (decreased size) while a positive value represents worsening.

Change From Baseline to Day 95 in Active Forward Flexion
Baseline, day 95

Active range of motion (AROM) measurement using a goniometer to assess forward flexion in the affected shoulder

Investigator global aesthetic improvement scale assessment of the target cellulite area
Day 90
Subject global aesthetic improvement scale assessment of the target cellulite area
Day 90
A responder analysis based on proportion of subjects with a ≥ 30% improvement from baseline in the absolute surface depth of the central dimple/depression based on 3D digital photography.
Day 90
Percent change from baseline in total absolute surface depth of the central dimple/depression based on 3D digital photography.
Day 90

Secondary Endpoints

Change from Baseline up to Day 85 in the Foot Function Index (FFI) Difficulty Subscale Score
Baseline, up to Day 85
Change from Baseline up to Day 85 in the FFI Activity Limitation Subscale Score
Baseline, up to Day 85
Change from Baseline up to Week 12 in the Weekly Mean of the ADP Score as Measured on the Pain Intensity NRS
Baseline, up to Week 12
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Group 1: CCH High DoseEXPERIMENTALParticipants will receive a high dose of CCH on Day 1.
Group 2: CCH Low DoseEXPERIMENTALParticipants will receive a low dose of CCH on Day 1.
Group 3: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo on Day 1.
Treatment I: CCH Shallow Injection, 3 AliquotsACTIVE_COMPARATORIn Treatment I, CCH will be injected subcutaneously while the participant lies in a prone position. Each injection will consist of a single skin injection of study drug administered as three 0.1 milliliters (mL) aliquots (for a total injection volume of 0.3 mL). During each treatment visit, 8 syringes (4 syringes per treatment area) will be prepared for dosing. Each syringe will contain 0.9 mL of CCH (3 injections in each syringe). Dose per participant per treatment visit = up to 1.68 milligrams (mg) of CCH (0.84 mg in each treatment area).
Treatment II: CCH Shallow Injection, 1 AliquotACTIVE_COMPARATORIn Treatment II, CCH will be injected subcutaneously while the participant is in a prone position. Each injection will consist of a single skin injection of study drug administered as a single shallow injection of a 0.3 mL aliquot. During each treatment visit, 8 syringes (4 syringes per treatment area) will be prepared for dosing. Each syringe will contain 0.9 mL of CCH (3 injections in each syringe). Dose per participant per treatment visit = up to 1.68 mg of CCH (0.84 mg in each treatment area).
Treatment III: CCH Deep Injection, 1 AliquotACTIVE_COMPARATORIn Treatment III, CCH will be injected subcutaneously while the participant is in a prone position. Each injection will consist of a single skin injection of study drug administered as a single deep injection of a 0.3 mL study drug aliquot. During each treatment visit, 8 syringes (4 syringes per treatment area) will be prepared for dosing. Each syringe will contain 0.9 mL of CCH (3 injections in each syringe). Dose per participant per treatment visit = up to 1.68 mg of CCH (0.84 mg in each treatment area).
Treatment IV: CCH Deep and Shallow Injections, 5 AliquotsACTIVE_COMPARATORIn Treatment IV, CCH will be injected subcutaneously while the participant lies in a prone position. Each injection will consist of a single skin injection of study drug administered as five 0.3 mL (for a total injection volume of 1.5 mL). During each treatment visit, 24 syringes (12 syringes per treatment area) will be prepared for dosing. Each syringe will contain 1.5 mL of CCH (5 aliquots of 0.3 mL, for each injection, in each syringe). Dose per participant per treatment visit = up to 1.68 mg of CCH (0.84 mg in each treatment area).
Treatment V: CCH Shallow Injections, 4 AliquotsACTIVE_COMPARATORIn Treatment V, CCH will be injected subcutaneously while the participant lies in a prone position. Each injection will receive a single skin injection of study drug administered as four 0.3 mL aliquots (for a total injection volume of 1.2 mL). During each treatment visit, 24 syringes (12 syringes per treatment area) will be prepared for dosing. Each syringe will contain 1.2 mL of CCH (4 aliquots of 0.3 mL each). Dose per participant per treatment visit = up to 1.68 mg of CCH (0.84 mg in each treatment area).
EN3835 ActiveEXPERIMENTALEN3835 0.84 mg (Collagenase Clostridium Histolyticum). Each subject can receive up to three treatment sessions. Each treatment session will be separated by approximately 21 days.
EN3835 PlaceboPLACEBO_COMPARATORPlacebo
AA4500 0.25 mgEXPERIMENTALCollagenase clostridium histolyticum, single 0.25 mg injection
AA4500 0.40 mgEXPERIMENTALCollagenase clostridium histolyticum, single 0.40 mg injection
AA4500 0.60 mgEXPERIMENTALCollagenase clostridium histolyticum, single 0.60 mg injection
PlaceboPLACEBO_COMPARATORPlacebo, single 0.25 mg, 0.40 mg, or 0.60 mg injection
Collagenase Clostridium HistolyticumEXPERIMENTALUp to 3 injections of .58 mg/1 mL of collagenase clostridium histolyticum (CCH), minimum of 21 days apart and home shoulder exercise.
AA4500 0.0029 mg in 1 mLEXPERIMENTAL -
AA4500 0.0145 mg in 5 mLEXPERIMENTAL -
AA4500 0.0145 mg in 1 mLEXPERIMENTAL -
AA4500 0.0435 mg in 5 mLEXPERIMENTAL -
AA4500 0.0435 mg in 1 mLEXPERIMENTAL -
AA4500 0.116 mg in 5 mLEXPERIMENTAL -
AA4500 0.116 mg in 1 mLEXPERIMENTAL -
AA4500 0.232 mg in 5 mLEXPERIMENTAL -
AA4500 at 0.232 in 1 mLEXPERIMENTAL -
AA4500 0.464 mg in 5 mLEXPERIMENTAL -
AA4500 0.464 mg in 1 mLEXPERIMENTAL -

Interventions

NameTypeDescription
Collagenase Clostridium Histolyticum (CCH)BIOLOGICALBiologic: Intrafascial injection
PlaceboBIOLOGICALIntrafascial injection
COLLAGENASE CLOSTRIDIUM HISTOLYTICUMBIOLOGICALInjectable intervention
Placebo ComparatorBIOLOGICAL -
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites39

Key Inclusion Criteria: * Have 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. * Have a diagnosis of plantar fasciitis for ≥6 months, which has...

Countries:United StatesAustralia
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Frequently asked questions about COLLAGENASE CLOSTRIDIUM HISTOLYTICUM

What is COLLAGENASE CLOSTRIDIUM HISTOLYTICUM used for?

COLLAGENASE CLOSTRIDIUM HISTOLYTICUM is an investigational drug being studied for Edematous Fibrosclerotic Panniculopathy (commonly known as cellulite), Plantar Fasciitis, Edematous Skin, Adhesive Capsulitis, and Dupuytren's Disease. It is in Phase 2 clinical development for these conditions.

Who makes COLLAGENASE CLOSTRIDIUM HISTOLYTICUM?

COLLAGENASE CLOSTRIDIUM HISTOLYTICUM is being developed by BrainsWay Ltd., a company traded under the ticker BWAY. The drug is in Phase 2 clinical development for multiple indications including cellulite and plantar fasciitis.

What phase is COLLAGENASE CLOSTRIDIUM HISTOLYTICUM in?

COLLAGENASE CLOSTRIDIUM HISTOLYTICUM is in Phase 2 clinical development. It is investigational and not yet approved by regulatory authorities. Clinical trials have been completed for conditions such as Edematous Fibrosclerotic Panniculopathy and Plantar Fasciitis.

What clinical trials is COLLAGENASE CLOSTRIDIUM HISTOLYTICUM in?

COLLAGENASE CLOSTRIDIUM HISTOLYTICUM has completed several clinical trials. NCT01518907 studied its safety and effectiveness for cellulite. NCT02724644 and NCT03632993 also evaluated it for cellulite and edematous skin. NCT06169319 assessed it for plantar fasciitis. All trials were conducted in the United States.

Is COLLAGENASE CLOSTRIDIUM HISTOLYTICUM the same as AA4500 or EN3835?

COLLAGENASE CLOSTRIDIUM HISTOLYTICUM is also known by the names AA4500 and EN3835 in clinical trials. NCT01518907 used AA4500, while NCT02724644 used EN3835, both for treating Edematous Fibrosclerotic Panniculopathy, commonly called cellulite.