ClinicalTrials.gg
CompletedNCT04510675Updated May 17, 2023Results posted

Irritation Potential of Omeza Collagen Matrix Using Modified HRIPT

An interventional study of Test Article and Negative Control in Erythema and Sensitisation, sponsored by Omeza, LLC. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-05-17.

Sponsored by Omeza, LLC · Not applicable, Interventional, and Basic science

From the registry’s dates

  • Registered 8 months after the study started (first participant enrolled Dec 2019, registered Aug 2020).
Phase
Not applicable
Study type
Interventional
Enrollment
58
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 55 studies in Erythema with a site in United States — 8 open to participants now, 10 under way, none of them phase 3. Erythema · United States.

Enrollment
25th of 52
58 · median 52
Started
2019
with 1 other
No phase
30 of 55
4 open now
Registered
43rd of 55
by date

Among the 55 studies in Erythema with a site in United States, this one is the 25th largest by enrollment of the 52 interventional ones, is one of 2 that started in 2019, is one of 30 with no phase, and was the 43rd registered.

By phase

55 studies; the count open now beside each. This study's row is marked.

No phasethis study30 · 4 open
Phase 28 · 2 open
Phase 35 · 0 open
Phase 14 · 0 open
Phase 44 · 1 open
Observational3 · 1 open
Phase 1/21 · 0 open

By the year they started

First in 2005; this study’s year is marked. 2 started in 2019.

Size and results

Median enrollment 52 across the 52 interventional studies, 104 across the 3 observational. Of the 45 that completed or were terminated, 27 (60%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 55 studies in Erythema with a site in United States, or all of them as a file.
02

Study summary

The primary objective of this study was to assess the sensitization potential of Omeza Collagen Matrix compared to that of a negative control based on a Modified Human Repeat Insult Patch Test.

03

Conditions studied

  • Erythema
  • Sensitisation

Browse trials for

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Good general health, as assessed by medical history and brief dermal skin examination of the application site (back);
  • Was fully informed of the risks of entering the study and was willing to provide written consent to enter the study;
  • Was willing to follow study rules, which included: no sun exposure (for example; no swimming, sunbathing, or tanning beds), avoided activities that would cause excessive sweating, abstained from use of lotions, creams, or oils on the back area;
  • Was willing to not change current brand of personal care products such as soaps, body washes, laundry detergents, body sprays, body spritzes, etc. while participating on the study;
  • Was willing and able to practice an acceptable measure of (i.e. birth control medication for at least 3 months prior, condom with spermicide or birth control injections,) during the study, if female of . To be considered female of non-childbearing potential, subject must have had a hysterectomy, tubal ligation, or had been for at least 1 year.

Exclusion criteria

Exclusion Criteria:

  • skin disease which participation, including psoriasis, eczema, atopic dermatitis, and active cancer;
  • Asthma that required medication;
  • Insulin-dependent diabetes;
  • Known immunological disorders such as positive, AIDS and systemic lupus
  • erythematosus;
  • Treatment for any type of cancer within the last six months;
  • Routine use (as defined by using more than 3 days in a week) of any anti-inflammatory drug (e.g., aspirin, ibuprofen, ; 81 mg aspirin is acceptable), drugs, antihistamine medication (steroid nose drops and/or eye drops are acceptable) or over-the-counter pain medication that was ingested in quantities exceeding label instructions;
  • Use of topical drugs at patch site;
  • Pregnancy, lactation, or planning a pregnancy (confirmed by a urine pregnancy test administered to females of );
  • Medical condition which, in the Investigator's judgement, made the subject
  • ineligible or placed the subject at undue risk;
  • Participation in any patch test for irritation or sensitization within the last four weeks;
  • Dermatological aberrations in or around test sites which included sunburn, extremely deep tans, uneven skin tones, tattoos, scars, excessive hair, numerous freckles, or any other disfiguration of the test site;
  • Confirmed allergy to adhesives, bandages, or ingredients in OmezaTM Collagen Matrix;
  • History of anaphylaxis to matrix ingredients (e.g. fish, palm oil, hemp oil, beeswax).
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
58 participants (actual)

Study arms

  • Experimental
    Test Article (Omeza Collagen Matrix)

    Repetitive and continuous patch applications of the test article to the same test sites on the back approximately 48 hours on weekdays and for approximately 72-hour periods over weekends over 3 weeks, for a total of 9 induction applications. During a subsequent challenge phase 10-17 days after the induction phase, the test article and negative control will be applied for 48 hours. Each subject will receive both the test article and negative control at the same time.

    Device: Test Article

  • Experimental
    Negative Control (0.9% aqueous sodium chloride)

    Repetitive and continuous patch applications of the negative control to the same test sites on the back approximately 48 hours on weekdays and for approximately 72-hour periods over weekends over 3 weeks, for a total of 9 induction applications. During a subsequent challenge phase 10-17 days after the induction phase, the test article and negative control will be applied for 48 hours. Each subject will receive both the test article and negative control at the same time.

    Other: Negative Control

Interventions

  • DeviceTest Article

    Omeza Collagen Matrix

  • OtherNegative Control

    Occlusive Patch of 0.9% sodium chloride, NaCl

06

What researchers measure

Primary outcomes

  1. Evidence of Erythema During the Challenge Phase for Omeza Collagen Matrix

    Erythema is evaluated during the challenge phase based on a numeric scale from 0 - 3 (0: No visible reaction, +: Slight/patchy, 1: Mild, 2: Moderate, 3: Strong). A score of 1, 2, or 3 indicates dermal sensitization.

    Time frame: 24, 48, 72, and 96 Hours

Secondary outcomes

  1. Adverse Events Deemed Related to the Test Product or the Study

    The secondary outcome measure is the number of adverse events deemed related to the test article or the study.

    Time frame: 6 weeks

07

Results

Posted May 17, 2023

Participant flow

Participant flow — Overall Study
MilestoneTest Article (Omeza Collagen Matrix) and Negative Control (Occlusive Patch of 0.9% NaCl)
Started58
Completed53
Not completed5
Withdrew: Withdrawal by subject5

Outcome measures

PrimaryEvidence of Erythema During the Challenge Phase for Omeza Collagen Matrix

Erythema is evaluated during the challenge phase based on a numeric scale from 0 - 3 (0: No visible reaction, +: Slight/patchy, 1: Mild, 2: Moderate, 3: Strong). A score of 1, 2, or 3 indicates dermal sensitization.

Time frame:
24, 48, 72, and 96 Hours
Reported as:
Count of participants · Participants
Evidence of Erythema During the Challenge Phase for Omeza Collagen Matrix
ParticipantsTest Article (Omeza Collagen Matrix)Negative Control (0.9% Aqueous Sodium Chloride)
Frequency of Irritation Score 0 at 24 Hours5349
Frequency of Irritation Score + at 24 Hours04
Frequency of Irritation Score 1 at 24 Hours00
Frequency of Irritation Score 2 at 24 Hours00
Frequency of Irritation Score 3 at 24 Hours00
Frequency of Irritation Score 0 at 48 Hours5250
Frequency of Irritation Score + at 48 Hours13
Frequency of Irritation Score 1 at 48 Hours00
Frequency of Irritation Score 2 at 48 Hours00
Frequency of Irritation Score 3 at 48 Hours00
Frequency of Irritation Score 0 at 72 Hours5350
Frequency of Irritation Score + at 72 Hours03
Frequency of Irritation Score 1 at 72 Hours00
Frequency of Irritation Score 2 at 72 Hours00
Frequency of Irritation Score 3 at 72 Hours00
Frequency of Irritation Score 0 at 96 Hours5353
Frequency of Irritation Score + at 96 Hours00
Frequency of Irritation Score 1 at 96 Hours00
Frequency of Irritation Score 2 at 96 Hours00
Frequency of Irritation Score 3 at 96 Hours00
SecondaryAdverse Events Deemed Related to the Test Product or the Study

The secondary outcome measure is the number of adverse events deemed related to the test article or the study.

Time frame:
6 weeks
Reported as:
Number · Adverse Events
Adverse Events Deemed Related to the Test Product or the Study
Adverse EventsTest Article (Omeza Collagen Matrix)Negative Control (Occlusive Patch of 0.9% NaCl)
Adverse Events Deemed Related to the Test Product or the Study00

Adverse events

Collected over Adverse events were monitored throughout the study with each patient monitored over the 6 weeks of treatment.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Test Article (Omeza Collagen Matrix) and Negative Control0/58 (0%)0/58 (0%)1/58 (1.7%)
Most frequent other events
Most frequent other events
EventTest Article (Omeza Collagen Matrix) and Negative Control
InfluenzaRespiratory, thoracic and mediastinal disorders1/58

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Test Article and Control
<=18 years0
Between 18 and 65 years58
>=65 years0
Age, Continuous
Age, Continuous(years)Test Article and Control
Mean49.4 ± 11.4
Sex: Female, Male
Sex: Female, Male(Participants)Test Article and Control
Female50
Male8
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Test Article and Control
Hispanic or Latino2
Not Hispanic or Latino56
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Test Article and Control
American Indian or Alaska Native1
Asian2
Native Hawaiian or Other Pacific Islander0
Black or African American36
White19
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Test Article and Control
United States58
08

Study locations

1 site
  • PCR Corp
    Saint Petersburg, Florida 33702, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Dec 2019 to primary completion in Jan 2020, 1 month.

Results were first posted in May 2023, 3 years 4 months after primary completion.

Of 43 interventional studies with no phase under Erythema, half reached primary completion within 3 months of starting (the median), counting those still running; a quarter within 1 and three quarters within 11. This study's 1 month is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 10, 2020
First posted
Aug 12, 2020
StartActual
Dec 2, 2019
Primary completionActual
Jan 11, 2020
CompletionActual
Jan 11, 2020
Results first posted
May 17, 2023
Last update
May 17, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 17, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04510675
Lead sponsor
Omeza, LLC
Responsible party
Sponsor
First posted
Aug 12, 2020
Start date
Dec 2, 2019
Primary completion
Jan 11, 2020
Completion
Jan 11, 2020
Results posted
May 17, 2023
Last update
May 17, 2023

Study contacts

Lynne Ellis, MD
principal investigator · PCR Corp
Lori DeCaro
study director · PCR Corp

Oversight

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

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This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

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Discussion

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