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Long-Term Study of EN3835 (CCH-aaes) in Edematous Fibrosclerotic Panniculopathy (Cellulite)

Primary Purpose

Edematous Fibrosclerotic Panniculopathy, Cellulite

Status
Completed
Phase
Phase 3
Locations
United States
Study Type
Interventional
Intervention
CCH-aaes
Observation
Sponsored by
Endo Pharmaceuticals
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Edematous Fibrosclerotic Panniculopathy

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)FemaleDoes not accept healthy volunteers

Inclusion Criteria

All Subjects (Through Day 180):

  1. Voluntarily sign and date an informed consent agreement
  2. Have participated in and completed the double-blind Phase 3 study EN3835-302 or EN3835-303
  3. Be willing to apply sunscreen to the buttocks before each exposure to the sun while participating in the study
  4. Be judged to be in good health
  5. Be willing and able to cooperate with the requirements of the study
  6. Be able to read, complete and understand the subject reported outcomes rating instruments in English.

In addition to inclusion Criteria for All Subjects Through Day 180, additional Inclusion Criteria are listed below:

Inclusion Criteria - Category I Subjects:

  1. Received active EN3835 in study EN3835-302 or EN3835-303
  2. Maximum composite response at Day 71 in either or both buttocks in double-blind study EN3835-302 or EN3835-303 was ONLY a 1-level improvement on CR-PCSS/PR-PCSS

Inclusion Criteria - Category II Subjects:

  1. Received active EN3835 in study EN3835-302 or EN3835-303
  2. Maximum composite response at Day 71 in either or both buttocks in double-blind study EN3835-302 or EN3835-303 was at least a 2-level composite improvement on CR-PCSS/PR-PCSS

Inclusion Criteria - Category III Subjects:

1. Received active EN3835 in study EN3835-302 or EN3835-303 but did not meet eligibility criteria for Category I or Category II status

Inclusion Criteria - Retreatment Subjects (Eligible Category I and Category II Subjects Whom opt to Receive Retreatment):

1. Have a negative serum pregnancy test

Exclusion Criteria

All Subjects (Through Day 180):

  1. Intends to or has used any of the local applications/therapies/injections/procedures that restricts study participation
  2. Intends to use tanning spray or tanning booths during this period
  3. Has received or intends to receive an investigational drug or treatment, other than the treatment received in study EN3835-302/303 during this period
  4. Any other condition(s) that, in the Investigator's opinion, might indicate the subject to be unsuitable for the study

In addition to Exclusion Criteria for All Subjects Through Day 180, additional Exclusion Criteria also apply to Category I and Category II subjects:

Exclusion Criteria - Category I and Category II Subjects (Post Day 180):

1. Has received any collagenase treatments at any time since completion of the double-blind study (EN3835-302 or EN3835-303).

Exclusion Criteria for Subjects Whom opt for Observations Only (ie, no retreatment): None

Exclusion Criteria - Category II Subjects:

Exclusion criteria for Subjects Whom opt for Observation Only (ie, no retreatment): None

Exclusion Criteria - Category III Subjects: None

Exclusion Criteria - Retreatment Subjects (Eligible Category I and Category II Subjects Whom opt to Receive Retreatment):

  1. Has systemic conditions (coagulation disorders, malignancy, keloidal scar, adnormal wound healing) that restricts study participation
  2. Has local (in areas to be treated) conditions (thrombosis, vascular disorder, active infection/inflammation, skin laxity, flaccidity and/or skin sagging, active cutaneous alteration, tattoo/mole) that restricts study participation
  3. Requires anticoagulant or antiplatelet medication during the study
  4. Prior to and during the course of retreatment (Treatment Visit 1 through Treatment Visit 4), is nursing or providing breast milk in any manner
  5. Prior to and during the course of retreatment (Treatment Visit 1 through Treatment Visit 4), intends to become pregnant during the study
  6. Prior to and during the course of retreatment (Treatment Visit 1 through Treatment Visit 4), intends to use tanning spray or tanning booths during the study
  7. Has received an investigational drug or treatment, other than treatment in study EN3835-302/303, within 30 days before retreatment with study drug
  8. Has a known systemic allergy to collagenase or any other excipient of study drug
  9. Has received any collagenase treatments at any time since completion of the double-blind study
  10. Any other condition(s) that, in the Investigator's opinion, might indicate the subject to be unsuitable for Category II retreatment

Sites / Locations

  • Endo Clinical Trial Site #3
  • Endo Clinical Trial Site #11
  • Endo Clinical Trial Site #41
  • Endo Clinical Trial Site #14
  • Endo Clinical Trial Site #9
  • Endo Clinical Trial Site #35
  • Endo Clinical Trial Site #42
  • Endo Clinical Trial Site #17
  • Endo Clinical Trial Site #39
  • Endo Clinical Trial Site #23
  • Endo Clinical Trial Site #38
  • Endo Clinical Trial Site #8
  • Endo Clinical Trial Site #40
  • Endo Clinical Trial Site #27
  • Endo Clinical Trial Site #36
  • Endo Clinical Trial Site #20
  • Endo Clinical Trial Site #19
  • Endo Clinical Trial Site #34
  • Endo Clinical Trial Site #30
  • Endo Clinical Trial Site #16
  • Endo Clinical Trial Site #10
  • Endo Clinical Trial Site #25
  • Endo Clinical Trial Site #33
  • Endo Clinical Trial Site #18
  • Endo Clinical Trial Site #4
  • Endo Clinical Trial Site #24
  • Endo Clinical Trial Site #32
  • Endo Clinical Trial Site #12
  • Endo Clinical Trial Site #15
  • Endo Clinical Trial Site #29
  • Endo Clinical Trial Site #26
  • Endo Clinical Trial Site #5
  • Endo Clinical Trial Site #22
  • Endo Clinical Trial Site #6
  • Endo Clinical Trial Site #13
  • Endo Clinical Trial Site #7
  • Endo Clinical Trial Site #28
  • Endo Clinical Trial Site #21
  • Endo Clinical Trial Site #37
  • Endo Clinical Trial Site #31
  • Endo Clinical Trial Site #1
  • Endo Clinical Trial Site #2

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Other

Arm Label

CCH-aaes Treatment in Parent Studies (EN3835-302/303)

Placebo Treatment in Parent Studies (EN3835-302/303)

Arm Description

Participants who received CCH-aaes treatment in EN3835-302/303 were followed for 180 days of observation with no treatment. Participants who were identified as received CCH-aaes in the parent studies following the 180-day Observation Phase and entered the Open-label Phase of the study. Participants in the Open-label Phase who qualified for, and opted for, retreatment were administered CCH-aaes up to 1.68 mg at 3 treatment sessions, at 21-day intervals.

Participants who received placebo in the parent studies, were followed for 180 days of observation with no treatment. After Day 180, all participants who received placebo during the double-blind parent studies were discontinued. No treatment was administered.

Outcomes

Primary Outcome Measures

Number of Participants With Treatment-emergent Adverse Events (TEAEs)
An adverse event (AE) was any unfavorable or unintended change in body structure (signs), body function (symptoms), laboratory result, or worsening of a pre-existing condition associated temporally with the use of the study medication whether or not considered related to the study medication. TEAEs were defined as any AEs with a start date equal to or after the date of the first injection. A summary of all Serious Adverse Events and Other Adverse Events (nonserious) regardless of causality is located in the 'Reported Adverse Events' Section.
Percentage of Participants Who Were Seropositive for Anti-Drug Antibodies (ADAs) After CCH-aaes Treatment
Serum samples were analyzed for ADAs. The percentage of participants who developed ADAs (seropositive results) during the Open-label Phase of the study are reported.

Secondary Outcome Measures

Time to 2-Level Reduction of Response in Clinician Reported Photonumeric Cellulite Severity Scale (CR-PCSS) and Patient Reported Photonumeric Cellulite Severity Scale (PR-PCSS)
CR-PCSS and PR-PCSS assess improvement in cellulite severity using a 5-level scale ranging from "0" (None) to "4" (Severe). Time to reduction of response (days) was defined as the number of days from Screening assessment of composite improvement in cellulite severity in PR-PCSS and CR-PCSS to the time at which a 2-level composite worsening of response was observed for the first time.
Time to 1-Level Reduction of Response in CR-PCSS and PR-PCSS
CR-PCSS and PR-PCSS assess improvement in cellulite severity using a 5-level scale ranging from "0" (None) to "4" (Severe). Time to reduction of response (days) was defined as the number of days from Screening assessment of composite improvement in cellulite severity in CR-PCSS and PR-PCSS to the time at which 1-level composite worsening of response was observed for the first time.
Time to Complete Loss of Response in CR-PCSS and PR-PCSS
CR-PCSS and PR-PCSS assess improvement in cellulite severity using a 5-level scale ranging from "0" (None) to "4" (Severe). Complete loss of response is defined as both CR-PCSS and PR-PCSS ratings returned to the baseline severity of the double-blind study or worse for both the buttocks. Time to complete loss of response (days) was defined as the number of days from Screening assessment of composite improvement in cellulite severity in CR-PCSS and PR-PCSS to the time at which complete loss of response was observed for the first time.

Full Information

First Posted
April 25, 2018
Last Updated
August 15, 2023
Sponsor
Endo Pharmaceuticals
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1. Study Identification

Unique Protocol Identification Number
NCT03526549
Brief Title
Long-Term Study of EN3835 (CCH-aaes) in Edematous Fibrosclerotic Panniculopathy (Cellulite)
Official Title
A Phase 3b, Open-Label, Long-Term Study to Evaluate the Safety and Temporal Pattern of Response of EN3835 in the Treatment of Edematous Fibrosclerotic Panniculopathy
Study Type
Interventional

2. Study Status

Record Verification Date
August 2023
Overall Recruitment Status
Completed
Study Start Date
April 26, 2018 (Actual)
Primary Completion Date
October 8, 2021 (Actual)
Study Completion Date
October 8, 2021 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Endo Pharmaceuticals

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
A Phase 3b, Open-Label Extension Study to evaluate safety and how long response of EN3835 (Collagenase Clostridium Histolyticum [CCH]-aaes) lasts in the treatment of Cellulite.
Detailed Description
This study included participants who completed EN3835-302 (NCT03428750) or EN3835-303 (NCT03446781) double-blind parent studies. The first part of this study consisted of an observational period conducted in a blinded fashion and where no treatments were administered between Day 71 of the parent studies and Day 180 in this Open-label extension study. Once these participants were unblinded at Day 180, only participants who received active CCH-aaes in the parent studies remained in this study and those who received placebo in the parent studies were not eligible to continue in the Open-label study. Assessments made at the Day 71/(End of Study [EOS]) visit of the parent studies served as initial screening assessments for this study. In the Open-label Phase of the study, all participants who qualified for, and opted for, retreatment were administered CCH-aaes at 3 treatment sessions at 21-day intervals.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Edematous Fibrosclerotic Panniculopathy, Cellulite

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 3
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Masking Description
Investigators, participants, and site personnel were blinded to the treatment administered in the EN3835-302/303 parent studies until all Day 180 visit assessments were completed. CCH-aaes retreatment in this study was provided in an open-label manner.
Allocation
Non-Randomized
Enrollment
483 (Actual)

8. Arms, Groups, and Interventions

Arm Title
CCH-aaes Treatment in Parent Studies (EN3835-302/303)
Arm Type
Experimental
Arm Description
Participants who received CCH-aaes treatment in EN3835-302/303 were followed for 180 days of observation with no treatment. Participants who were identified as received CCH-aaes in the parent studies following the 180-day Observation Phase and entered the Open-label Phase of the study. Participants in the Open-label Phase who qualified for, and opted for, retreatment were administered CCH-aaes up to 1.68 mg at 3 treatment sessions, at 21-day intervals.
Arm Title
Placebo Treatment in Parent Studies (EN3835-302/303)
Arm Type
Other
Arm Description
Participants who received placebo in the parent studies, were followed for 180 days of observation with no treatment. After Day 180, all participants who received placebo during the double-blind parent studies were discontinued. No treatment was administered.
Intervention Type
Biological
Intervention Name(s)
CCH-aaes
Other Intervention Name(s)
EN3835, QWO™
Intervention Description
Administered to participants who qualified for, and opted for, retreatment.
Intervention Type
Other
Intervention Name(s)
Observation
Intervention Description
No treatment administered during 180 days of observation.
Primary Outcome Measure Information:
Title
Number of Participants With Treatment-emergent Adverse Events (TEAEs)
Description
An adverse event (AE) was any unfavorable or unintended change in body structure (signs), body function (symptoms), laboratory result, or worsening of a pre-existing condition associated temporally with the use of the study medication whether or not considered related to the study medication. TEAEs were defined as any AEs with a start date equal to or after the date of the first injection. A summary of all Serious Adverse Events and Other Adverse Events (nonserious) regardless of causality is located in the 'Reported Adverse Events' Section.
Time Frame
Up to Day 1080
Title
Percentage of Participants Who Were Seropositive for Anti-Drug Antibodies (ADAs) After CCH-aaes Treatment
Description
Serum samples were analyzed for ADAs. The percentage of participants who developed ADAs (seropositive results) during the Open-label Phase of the study are reported.
Time Frame
From Day 180 (Open-label Phase) up to Day 1080
Secondary Outcome Measure Information:
Title
Time to 2-Level Reduction of Response in Clinician Reported Photonumeric Cellulite Severity Scale (CR-PCSS) and Patient Reported Photonumeric Cellulite Severity Scale (PR-PCSS)
Description
CR-PCSS and PR-PCSS assess improvement in cellulite severity using a 5-level scale ranging from "0" (None) to "4" (Severe). Time to reduction of response (days) was defined as the number of days from Screening assessment of composite improvement in cellulite severity in PR-PCSS and CR-PCSS to the time at which a 2-level composite worsening of response was observed for the first time.
Time Frame
From Day 180 (Open-label Observation Phase) up to Day 1080
Title
Time to 1-Level Reduction of Response in CR-PCSS and PR-PCSS
Description
CR-PCSS and PR-PCSS assess improvement in cellulite severity using a 5-level scale ranging from "0" (None) to "4" (Severe). Time to reduction of response (days) was defined as the number of days from Screening assessment of composite improvement in cellulite severity in CR-PCSS and PR-PCSS to the time at which 1-level composite worsening of response was observed for the first time.
Time Frame
From Day 180 (Open-label Observation Phase) up to Day 1080
Title
Time to Complete Loss of Response in CR-PCSS and PR-PCSS
Description
CR-PCSS and PR-PCSS assess improvement in cellulite severity using a 5-level scale ranging from "0" (None) to "4" (Severe). Complete loss of response is defined as both CR-PCSS and PR-PCSS ratings returned to the baseline severity of the double-blind study or worse for both the buttocks. Time to complete loss of response (days) was defined as the number of days from Screening assessment of composite improvement in cellulite severity in CR-PCSS and PR-PCSS to the time at which complete loss of response was observed for the first time.
Time Frame
From Day 180 (Open-label Observation Phase) up to Day 1080

10. Eligibility

Sex
Female
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Key Inclusion Criteria All Participants (Through Day 180): Voluntarily sign and date an informed consent agreement Have participated in and completed the double-blind Phase 3 study EN3835-302 or EN3835-303 Be willing to apply sunscreen to the buttocks before each exposure to the sun and/or tanning booths while participating in the study Be judged to be in good health Be willing and able to cooperate with the requirements of the study Be able to read, complete and understand the participant reported outcomes rating instruments in English. Key Inclusion Criteria for Participants Eligible for Retreatment: 1. Have a negative pregnancy test and using a stable and effective contraception method. Key Exclusion Criteria All Participants (Through Day 180): Intends to or has used any of the local applications/therapies/injections/procedures that restricts study participation Intends to use tanning spray or tanning booths during this period Has received or intends to receive an investigational drug or treatment, other than the treatment received in study EN3835-302/303 during this period Any other condition(s) that, in the Investigator's opinion, might indicate the participant to be unsuitable for the study Additional Exclusion Criteria may apply Post Day 180: 1. Has received any collagenase treatments at any time since completion of the double-blind study (EN3835-302 or EN3835-303). Key Exclusion Criteria for Participants Eligible for Retreatment: 1. Has systemic conditions (coagulation disorders, malignancy, keloidal scar, abnormal wound healing) that restricts study participation Has local (in areas to be treated) conditions (thrombosis, vascular disorder, active infection/inflammation, skin laxity, flaccidity and/or skin sagging, active cutaneous alteration, tattoo/mole) that restricts study participation Requires anticoagulant or antiplatelet medication during the study Prior to and during the course of retreatment, is nursing or providing breast milk in any manner, intends to become pregnant during the study, or intends to use tanning spray or tanning booths during the study Has received an investigational drug or treatment, other than treatment in study EN3835-302/303, within 30 days before retreatment with study drug Has a known systemic allergy to collagenase or any other excipient of study drug Has received any collagenase treatments at any time since completion of the double-blind study Any other condition(s) that, in the Investigator's opinion, might indicate the participant to be unsuitable for retreatment
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Karen Chajko
Organizational Affiliation
Endo Pharmaceuticals
Official's Role
Study Director
Facility Information:
Facility Name
Endo Clinical Trial Site #3
City
Glendale
State/Province
Arizona
ZIP/Postal Code
85308
Country
United States
Facility Name
Endo Clinical Trial Site #11
City
Scottsdale
State/Province
Arizona
ZIP/Postal Code
85258
Country
United States
Facility Name
Endo Clinical Trial Site #41
City
North Little Rock
State/Province
Arkansas
ZIP/Postal Code
72116
Country
United States
Facility Name
Endo Clinical Trial Site #14
City
Encinitas
State/Province
California
ZIP/Postal Code
92024
Country
United States
Facility Name
Endo Clinical Trial Site #9
City
Long Beach
State/Province
California
ZIP/Postal Code
90806
Country
United States
Facility Name
Endo Clinical Trial Site #35
City
Murrieta
State/Province
California
ZIP/Postal Code
92562
Country
United States
Facility Name
Endo Clinical Trial Site #42
City
Newport Beach
State/Province
California
ZIP/Postal Code
92663
Country
United States
Facility Name
Endo Clinical Trial Site #17
City
Oceanside
State/Province
California
ZIP/Postal Code
92056
Country
United States
Facility Name
Endo Clinical Trial Site #39
City
San Diego
State/Province
California
ZIP/Postal Code
92121
Country
United States
Facility Name
Endo Clinical Trial Site #23
City
Greenwood Village
State/Province
Colorado
ZIP/Postal Code
80111
Country
United States
Facility Name
Endo Clinical Trial Site #38
City
Boca Raton
State/Province
Florida
ZIP/Postal Code
33486
Country
United States
Facility Name
Endo Clinical Trial Site #8
City
Coral Gables
State/Province
Florida
ZIP/Postal Code
33146
Country
United States
Facility Name
Endo Clinical Trial Site #40
City
Largo
State/Province
Florida
ZIP/Postal Code
33770
Country
United States
Facility Name
Endo Clinical Trial Site #27
City
Miami
State/Province
Florida
ZIP/Postal Code
33137
Country
United States
Facility Name
Endo Clinical Trial Site #36
City
Miami
State/Province
Florida
ZIP/Postal Code
33185
Country
United States
Facility Name
Endo Clinical Trial Site #20
City
Snellville
State/Province
Georgia
ZIP/Postal Code
30078
Country
United States
Facility Name
Endo Clinical Trial Site #19
City
Meridian
State/Province
Idaho
ZIP/Postal Code
83642
Country
United States
Facility Name
Endo Clinical Trial Site #34
City
Chicago
State/Province
Illinois
ZIP/Postal Code
60654
Country
United States
Facility Name
Endo Clinical Trial Site #30
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46260
Country
United States
Facility Name
Endo Clinical Trial Site #16
City
Metairie
State/Province
Louisiana
ZIP/Postal Code
70006
Country
United States
Facility Name
Endo Clinical Trial Site #10
City
New Orleans
State/Province
Louisiana
ZIP/Postal Code
70115
Country
United States
Facility Name
Endo Clinical Trial Site #25
City
New Orleans
State/Province
Louisiana
ZIP/Postal Code
70124
Country
United States
Facility Name
Endo Clinical Trial Site #33
City
Quincy
State/Province
Massachusetts
ZIP/Postal Code
02169
Country
United States
Facility Name
Endo Clinical Trial Site #18
City
Washington
State/Province
Missouri
ZIP/Postal Code
63090
Country
United States
Facility Name
Endo Clinical Trial Site #4
City
Omaha
State/Province
Nebraska
ZIP/Postal Code
68144
Country
United States
Facility Name
Endo Clinical Trial Site #24
City
Mount Kisco
State/Province
New York
ZIP/Postal Code
10549
Country
United States
Facility Name
Endo Clinical Trial Site #32
City
New York
State/Province
New York
ZIP/Postal Code
10016
Country
United States
Facility Name
Endo Clinical Trial Site #12
City
New York
State/Province
New York
ZIP/Postal Code
10022
Country
United States
Facility Name
Endo Clinical Trial Site #15
City
New York
State/Province
New York
ZIP/Postal Code
10065
Country
United States
Facility Name
Endo Clinical Trial Site #29
City
New York
State/Province
New York
ZIP/Postal Code
10075
Country
United States
Facility Name
Endo Clinical Trial Site #26
City
Cincinnati
State/Province
Ohio
ZIP/Postal Code
45236
Country
United States
Facility Name
Endo Clinical Trial Site #5
City
Nashville
State/Province
Tennessee
ZIP/Postal Code
37215
Country
United States
Facility Name
Endo Clinical Trial Site #22
City
Austin
State/Province
Texas
ZIP/Postal Code
78759
Country
United States
Facility Name
Endo Clinical Trial Site #6
City
Beaumont
State/Province
Texas
ZIP/Postal Code
77701
Country
United States
Facility Name
Endo Clinical Trial Site #13
City
Houston
State/Province
Texas
ZIP/Postal Code
77056
Country
United States
Facility Name
Endo Clinical Trial Site #7
City
Houston
State/Province
Texas
ZIP/Postal Code
77494
Country
United States
Facility Name
Endo Clinical Trial Site #28
City
Pflugerville
State/Province
Texas
ZIP/Postal Code
78660
Country
United States
Facility Name
Endo Clinical Trial Site #21
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78229
Country
United States
Facility Name
Endo Clinical Trial Site #37
City
Sugar Land
State/Province
Texas
ZIP/Postal Code
77497
Country
United States
Facility Name
Endo Clinical Trial Site #31
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84101
Country
United States
Facility Name
Endo Clinical Trial Site #1
City
Charlottesville
State/Province
Virginia
ZIP/Postal Code
22911
Country
United States
Facility Name
Endo Clinical Trial Site #2
City
Lynchburg
State/Province
Virginia
ZIP/Postal Code
24501
Country
United States

12. IPD Sharing Statement

Learn more about this trial

Long-Term Study of EN3835 (CCH-aaes) in Edematous Fibrosclerotic Panniculopathy (Cellulite)

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