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CompletedNCT02842736CLARITYUpdated Jan 5, 2021Results posted

A CLinical Study to Evaluate the Safety And Effectiveness of the CeRene DevIce to Treat HeavY Menstrual Bleeding

An interventional study of Cerene(R) Cryotherapy Device in Menorrhagia, sponsored by Channel Medsystems. Completed at 12 sites in 3 countries. Open to female participants aged 25 Years to 50 Years. Per ClinicalTrials.gov, last updated 2021-01-05.

Sponsored by Channel Medsystems · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Apr 2016, registered Jul 2016).
Phase
Not applicable
Study type
Interventional
Enrollment
242
Allocation
Not applicable
Ages
25 Years to 50 Years
Sex
Female
01

Study summary

The purpose of the study is to evaluate the safety and effectiveness of the Cerene Cryotherapy Device in reducing menstrual bleeding in women with heavy menstrual bleeding (menorrhagia) due to benign causes for whom child bearing is complete.

02

Conditions studied

  • Menorrhagia

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Keywords

  • heavy menstrual bleeding
  • endometrial ablation
03

In context

Menorrhagia

182 studies on the registry are indexed under Menorrhagia; 33 are open to participants now.

This study's enrollment of 242 is above the median of 100 across 133 interventional studies indexed under Menorrhagia.

Browse Menorrhagia studies →

Lead sponsor

Channel Medsystems is the lead sponsor of 2 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
25 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Refractory heavy menstrual bleeding with no definable organic cause
  • Female subject age 25 to 50 years, inclusive
  • Sounded length of uterine cavity no greater than 10 cm and endometrial cavity no greater than 6.5 cm
  • Sufficient myometrial thickness
  • Documented excessive menstrual blood loss within 3 months of informed consent
  • Premenopausal confirmed by follicle stimulating hormone (FSH) measurement
  • Agrees to use a reliable form of contraception following ablation treatment
  • Provides written informed consent using a form that has been approved by the reviewing ethics committee
  • Agrees to follow-up exams and data collection requirements
  • Demonstrates an understanding of how to record menstrual blood loss using a menstrual pictogram
  • Has predictable, cyclic menstrual cycles

Exclusion criteria

Exclusion Criteria:

  • Pregnant or has a desire to conceive
  • Endometrial hyperplasia as confirmed by histology
  • Active endometritis
  • Active pelvic inflammatory disease
  • Active sexually transmitted disease (STD)
  • Presence of bacteremia, sepsis, or other active systemic infection
  • Active infection of the genitals, vagina, cervix, or uterus
  • Known/suspected abdominal, pelvic, or gynecological malignancy within the past 5 years
  • Known clotting defects or bleeding disorders
  • Abnormal cytology on Human papillomavirus (HPV) testing not treated according to local standards.
  • Prior uterine surgery that interrupts the integrity of the uterine wall (e.g., transmural myomectomy or classical cesarean section).
  • Previous low transverse cesarean section where the myometrial wall thickness is insufficient
  • Previous endometrial ablation procedure
  • Clinically significant adenomyosis indicated by subject complaints, imaging, or clinician's judgment
  • Presence of an implantable contraceptive device
  • Currently on medications that could thin the myometrial muscle
  • Currently on anticoagulants
  • Abnormal or obstructed cavity
  • Currently using an intrauterine device (IUD) and unwilling to remove the IUD
  • Post-partum ≤ 6-months
  • Considering participation in a research study of an investigational drug or device that would begin during the course of this investigational study
  • Any general health or mental, or other situation or condition which, in the opinion of the Investigator, could represent an increased risk for the subject or impact the subject's ability to comply with protocol requirements
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
242 participants (actual)

Study arms

  • Experimental
    Endometrial Cryoablation

    Device: Cerene(R) Cryotherapy Device

Interventions

  • DeviceCerene(R) Cryotherapy Device
06

What researchers measure

Primary outcomes

  1. Primary Safety Endpoint: Number of Serious Adverse Events and Serious Device-related Adverse Events

    Time frame: 12 months

  2. Primary Effectiveness Endpoint: Number of Subjects With Reduction in Menstrual Bleeding to PBLAC Score of ≤75

    Success for the primary effectiveness endpoint was defined as reduction in menstrual bleeding to a PBLAC (Pictorial Blood Loss Assessment Chart) score of ≤75. Scale information for PBLAC (Pictorial Blood Loss Assessment Chart): The scale minimum is 0, which indicates amenorrhea, i.e. no bleeding. There is no scale maximum. A score of 100 indicates eumenorrhea, i.e. normal menstrual bleeding. A lower PBLAC score indicates less bleeding; a higher PBLAC score indicates more bleeding.

    Time frame: 12 months

Secondary outcomes

  1. Dysmennorhea

    Subjects were queried regarding if they suffer from dysmenorrhea (painful cramping associated with menstruation). The subject was asked to rate their level of dysmenorrhea on a scale from 0 to 5, with 0 indicating no symptoms and 5 indicating very severe symptoms. A score of 0 was considered better than a score of 5.

    Time frame: 12 Months

  2. Amenorrhea

    Pictorial blood loss assessment (PBLAC) score = 0 Scale information for PBLAC (Pictorial Blood Loss Assessment Chart): The scale minimum is 0, which indicates amenorrhea, i.e. no bleeding. There is no scale maximum. A score of 100 indicates eumenorrhea, i.e. normal menstrual bleeding. A lower PBLAC score indicates less bleeding; a higher PBLAC score indicates more bleeding.

    Time frame: 12 Months

  3. Investigator Evaluation of the Uterine Cavity

    Time frame: 12 Months

  4. Investigator Assessment of Cavity Findings

    Questions to the investigator

    Time frame: 12 Months

  5. Anesthesia and Pain Medications at Treatment

    Time frame: Day of Treatment

  6. Subject Rating of Pain During Treatment and Day One Post-Treatment

    Pain rating using numeric rating scale, minimum 0, maximum 10, with 0 designated as no pain and 10 designated as the worst pain.

    Time frame: Day of Treatment and Day One Post-Treatment

Other outcomes

  1. Subjects' Report of Their Last Menstrual Period

    Subjects were asked to describe their last menstrual period

    Time frame: 36 months

  2. Menstrual Impact Questionnaire

    Subjects' Report of Activity Limitations

    Time frame: 36 months

  3. Premenstrual Symptoms Impact Survey

    Subjects' Report of Pre-Menstrual Symptoms (PMS)

    Time frame: 36 months

  4. Subject Satisfaction

    Subject's level of satisfaction with the results of her Cerene treatment

    Time frame: 36 Months

  5. Subject Recommendation

    Subjects' reported level of recommendation to a friend/family

    Time frame: 36 months

  6. Procedure Time

    Device insertion to device removal

    Time frame: Day of Treatment

  7. Return to Normal Daily Activities

    Time frame: Two-Weeks

07

Results

Posted Jun 6, 2019

Participant flow

Participant flow — Overall Study
MilestoneEndometrial Cryoablation
Started242
Known month 12 outcome230
24 month visit performed210
Completed201
Not completed41
Withdrew: Lost to follow-up13
Withdrew: Intervention for menstrual bleeding17
Withdrew: Withdrawal by subject4
Withdrew: Pregnancy3
Withdrew: Hysterectomy for fibroids2
Withdrew: Hysterectomy for uterine prolapse1
Withdrew: Iud: mirena1

Outcome measures

PrimaryPrimary Safety Endpoint: Number of Serious Adverse Events and Serious Device-related Adverse Events
Time frame:
12 months
Reported as:
Number · Reports of events
Primary Safety Endpoint: Number of Serious Adverse Events and Serious Device-related Adverse Events
Reports of eventsEndometrial Cryoablation
Serious adverse events7
Serious device-related adverse events0
PrimaryPrimary Effectiveness Endpoint: Number of Subjects With Reduction in Menstrual Bleeding to PBLAC Score of ≤75

Success for the primary effectiveness endpoint was defined as reduction in menstrual bleeding to a PBLAC (Pictorial Blood Loss Assessment Chart) score of ≤75. Scale information for PBLAC (Pictorial Blood Loss Assessment Chart): The scale minimum is 0, which indicates amenorrhea, i.e. no bleeding. There is no scale maximum. A score of 100 indicates eumenorrhea, i.e. normal menstrual bleeding. A lower PBLAC score indicates less bleeding; a higher PBLAC score indicates more bleeding.

Time frame:
12 months
Reported as:
Count of participants · Participants
Primary Effectiveness Endpoint: Number of Subjects With Reduction in Menstrual Bleeding to PBLAC Score of ≤75
ParticipantsEndometrial Cryoablation
Primary Effectiveness Endpoint: Number of Subjects With Reduction in Menstrual Bleeding to PBLAC Score of ≤75186
SecondaryDysmennorhea

Subjects were queried regarding if they suffer from dysmenorrhea (painful cramping associated with menstruation). The subject was asked to rate their level of dysmenorrhea on a scale from 0 to 5, with 0 indicating no symptoms and 5 indicating very severe symptoms. A score of 0 was considered better than a score of 5.

Time frame:
12 Months
Reported as:
Count of participants · Participants
Dysmennorhea
ParticipantsEndometrial Cryoablation
0 - No symptom74
1 - Very Mild70
2 - Mild40
3 - Moderate33
4 - Severe10
5 - Very Severe3
SecondaryAmenorrhea

Pictorial blood loss assessment (PBLAC) score = 0 Scale information for PBLAC (Pictorial Blood Loss Assessment Chart): The scale minimum is 0, which indicates amenorrhea, i.e. no bleeding. There is no scale maximum. A score of 100 indicates eumenorrhea, i.e. normal menstrual bleeding. A lower PBLAC score indicates less bleeding; a higher PBLAC score indicates more bleeding.

Time frame:
12 Months
Reported as:
Count of participants · Participants
Amenorrhea
ParticipantsEndometrial Cryoablation
Amenorrhea25
SecondaryInvestigator Evaluation of the Uterine Cavity
Time frame:
12 Months
Reported as:
Count of participants · Participants
Investigator Evaluation of the Uterine Cavity
ParticipantsEndometrial Cryoablation
Uterine cavity entry with a hysteroscope — YES220
Uterine cavity entry with a hysteroscope — NO3
Full visualization of the uterine cavity — YES204
Full visualization of the uterine cavity — NO19
SecondaryInvestigator Assessment of Cavity Findings

Questions to the investigator

Time frame:
12 Months
Reported as:
Count of participants · Participants
Investigator Assessment of Cavity Findings
ParticipantsEndometrial Cryoablation
Would the Investigator be able to direct a biopsy anywhere within the uterine cavity? — YES178
Would the Investigator be able to direct a biopsy anywhere within the uterine cavity? — NO26
Satisfied with ability to adequately visualize the endometrium to evaluate for pathologic change? — YES195
Satisfied with ability to adequately visualize the endometrium to evaluate for pathologic change? — NO9
SecondaryAnesthesia and Pain Medications at Treatment
Time frame:
Day of Treatment
Reported as:
Count of participants · Participants
Anesthesia and Pain Medications at Treatment
ParticipantsEndometrial Cryoablation
Paracervical block only20
Paracervical block with nonsteroidal anti-inflammatories48
Paracervical block with oral narcotics and/or anxiolytics167
Paracervical block with intravenous sedation7
General anesthesia0
SecondarySubject Rating of Pain During Treatment and Day One Post-Treatment

Pain rating using numeric rating scale, minimum 0, maximum 10, with 0 designated as no pain and 10 designated as the worst pain.

Time frame:
Day of Treatment and Day One Post-Treatment
Reported as:
Median · units on a scale
Subject Rating of Pain During Treatment and Day One Post-Treatment
units on a scaleEndometrial Cryoablation
Before Device Insertion1 (0 to 10)
After Device Insertion2 (0 to 10)
After Liner Deployment (before endometrial ablation was initiated)1 (0 to 10)
After 1 Minute of Ablation2 (0 to 10)
End of Ablation1 (0 to 10)
15-30 Minutes Post-Procedure2 (0 to 10)
At Time of Discharge2 (0 to 8)
Day 10 (0 to 8)
Other pre-specifiedSubjects' Report of Their Last Menstrual Period

Subjects were asked to describe their last menstrual period

Time frame:
36 months
Reported as:
Count of participants · Participants
Subjects' Report of Their Last Menstrual Period
ParticipantsEndometrial Cryoablation
I no longer get my period29
My periods are lighter than normal99
My periods are normal50
I continue to have heavy periods23
Other pre-specifiedMenstrual Impact Questionnaire

Subjects' Report of Activity Limitations

Time frame:
36 months
Reported as:
Count of participants · Participants
Menstrual Impact Questionnaire
ParticipantsEndometrial Cryoablation
Free of limitation in activity at moderate or higher level182
Limitation in activity is present at moderate or higher level19
Other pre-specifiedPremenstrual Symptoms Impact Survey

Subjects' Report of Pre-Menstrual Symptoms (PMS)

Time frame:
36 months
Reported as:
Count of participants · Participants
Premenstrual Symptoms Impact Survey
ParticipantsEndometrial Cryoablation
Free of PMS often, most often, very often, or all of the time171
PMS occur often, most often, very often, or all of the time30
Other pre-specifiedSubject Satisfaction

Subject's level of satisfaction with the results of her Cerene treatment

Time frame:
36 Months
Reported as:
Count of participants · Participants
Subject Satisfaction
ParticipantsEndometrial Cryoablation
Satisfied or very satisfied153
Dissatisfied or very dissatisfied28
Other pre-specifiedSubject Recommendation

Subjects' reported level of recommendation to a friend/family

Time frame:
36 months
Reported as:
Count of participants · Participants
Subject Recommendation
ParticipantsEndometrial Cryoablation
Definitely or maybe recommend175
Probably not or definitely not recommend18
Other pre-specifiedProcedure Time

Device insertion to device removal

Time frame:
Day of Treatment
Reported as:
Mean · minutes
Procedure Time
minutesEndometrial Cryoablation
Procedure Time6.9 ± 1.1
Other pre-specifiedReturn to Normal Daily Activities
Time frame:
Two-Weeks
Reported as:
Mean · days
Return to Normal Daily Activities
daysEndometrial Cryoablation
Return to Normal Daily Activities2.0 ± 2.3

Adverse events

Collected over 36 Months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Endometrial Cryoablation0/242 (0%)6/242 (2.5%)29/242 (12%)
Most frequent serious events
Most frequent serious events
EventEndometrial Cryoablation
Ectopic PregnancyPregnancy, puerperium and perinatal conditions1/242
Acute CholecystitisHepatobiliary disorders1/242
Bile Duct ObstructionHepatobiliary disorders1/242
StrokeNervous system disorders1/242
MenorrhagiaReproductive system and breast disorders1/242
Chronic ConstipationGastrointestinal disorders1/242
Paresthesia of limbsNervous system disorders1/242
Most frequent other events
Showing 10 of 32
Most frequent other events
EventEndometrial Cryoablation
MenorrhagiaReproductive system and breast disorders15/242
Vaginal infection and/or dischargeReproductive system and breast disorders11/242
Uterine crampsReproductive system and breast disorders8/242
Bacterial vaginosisInfections and infestations7/242
Pelvic painReproductive system and breast disorders4/242
PresyncopeNervous system disorders3/242
Urinary incontinenceRenal and urinary disorders2/242
Menstrual crampsReproductive system and breast disorders2/242
Pelvic painReproductive system and breast disorders2/242
Vaginal dischargeReproductive system and breast disorders2/242

Baseline characteristics

Age, Continuous
Age, Continuous(years)Endometrial Cryoablation
Mean40.1 ± 5.1
Sex: Female, Male
Sex: Female, Male(Participants)Endometrial Cryoablation
Female242
Male0
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Endometrial Cryoablation
White190
Black or African American6
American Indian or Alaska Native3
Other43
Baseline PBLAC (Pictorial Blood Loss Assessment Chart) Score
Baseline PBLAC (Pictorial Blood Loss Assessment Chart) Score(scores on a scale)Endometrial Cryoablation
Mean360.6 ± 332.1
08

Study locations

12 sites
  • WomanCare PC
    Arlington Heights, Illinois 60004, United States
  • The Advance Gynecologic Surgery Institute
    Naperville, Illinois 60540, United States
  • Women's Health Advantage
    Fort Wayne, Indiana 46825, United States
  • Basinski LLC
    Newburgh, Indiana 47630, United States
  • Asheville Women's Medical Center
    Asheville, North Carolina 28801, United States
  • Seven Hills Women's Health
    Cincinnati, Ohio 45231, United States
  • Amy Brenner MD and Associates, LLC
    Mason, Ohio 45040, United States
  • Vanderbilt University Medical Center
    Nashville, Tennessee 37232, United States
  • Premier Clinical Research
    Spokane, Washington 99202, United States
  • Allan Centre
    Calgary, Alberta T2J 7G9, Canada
  • LaSalle Hospital
    Lasalle, Quebec H8P 1C1, Canada
  • Hospital Universitario de la Universidad Autónoma de Nuevo Leon
    Monterrey, Nuevo Leon 66460, Mexico
09

References and documents

Publications

  • Curlin HL, Anderson TL. Endometrial Cryoablation for the Treatment of Heavy Menstrual Bleeding: 36-Month Outcomes from the CLARITY Study. Int J Womens Health. 2022 Aug 10;14:1083-1092. doi: 10.2147/IJWH.S371044. eCollection 2022. PubMed 35983177 ↗
  • Curlin H, Cholkeri-Singh A, Leal JGG, Anderson T. Hysteroscopic Access and Uterine Cavity Evaluation 12 Months after Endometrial Ablation with the Cerene Cryotherapy Device. J Minim Invasive Gynecol. 2022 Mar;29(3):440-447. doi: 10.1016/j.jmig.2021.11.016. Epub 2021 Nov 25. PubMed 34839060 ↗
  • Curlin HL, Cintron LC, Anderson TL. A Prospective, Multicenter, Clinical Trial Evaluating the Safety and Effectiveness of the Cerene Device to Treat Heavy Menstrual Bleeding. J Minim Invasive Gynecol. 2021 Apr;28(4):899-908. doi: 10.1016/j.jmig.2020.08.013. Epub 2020 Aug 22. PubMed 32835865 ↗

Study documents

  • Study protocol · Oct 12, 2018
  • Statistical analysis plan · Jun 29, 2016

Documents are hosted by the registry — open the source record to download them.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 5, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02842736
Lead sponsor
Channel Medsystems
Responsible party
Sponsor
First posted
Jul 25, 2016
Start date
Apr 2016
Primary completion
Apr 2018
Completion
May 2020
Results posted
Jun 6, 2019
Last update
Jan 5, 2021

Oversight

FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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