ClinicalTrials.gg
RecruitingNCT07467837PRIMEUpdated Mar 12, 2026

Prevention of Stretch Marks in Expectant Mothers

An observational study in Pregnant Women and Stretch Mark, sponsored by Stratpharma AG. Recruiting at 1 site in Australia. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-03-12.

Sponsored by Stratpharma AG · Observational

From the registry’s dates

  • Started Feb 2026; still recruiting 8 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
10,000
Ages
18 Years and older
Sex
Female
01

Study summary

PRIME Mothers is a national observational trial designed to evaluate patient outcomes with Stratamark® for the prevention of stretch marks during pregnancy and the postpartum period. The study is designed to fit seamlessly into routine clinical practice, with digital follow-up and home resupply, minimising clinic involvement.

Read the detailed description

Pregnant women visiting the healthcare professional will have the opportunity to participate in the study by scanning a QR code displayed at the healthcare professional office. Upon scanning the QR code, participants will be directed to complete an electronic informed consent form, followed by a baseline self-assessment. Eligibility will be automatically determined based on the information provided during this assessment. As part of the baseline self-assessment, participants will submit demographic information and confirm the absence of any pre-existing stretch marks on their abdomen. Eligible participants will then receive a confirmation notification indicating their enrollment in the study. This notification must be presented to the healthcare professional to receive the initial supply (two tubes of 50g Stratamark®) of the study product from the healthcare professionals office

Monthly follow-up self-assessments will be performed remotely using an electronic Case Report Form (eCRF) tool. Participants will receive a link to access and complete the survey online, this includes the option to provide photographs (abdomen only).

If a participant requires resupply of the study product, completion of at least one monthly follow-up self-assessment is required. Upon completion, the participant will receive a confirmation notification containing a code and a link to order the next product supply free of charge.

The final assessment will take place 6-8 weeks after the baby has been delivered.

02

Conditions studied

  • Pregnant Women
  • Stretch Mark

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Keywords

  • Stratamark
  • expectant mothers
  • prevention of stretch marks
03

In context

Striae Distensae

44 studies on the registry are indexed under Striae Distensae; 7 are open to participants now.

Browse Striae Distensae studies →

Lead sponsor

Stratpharma AG is the lead sponsor of 12 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Healthy pregnant women at any gestational age, who are at least 18 years of age and do not have visible stretch marks on the abdomen prior to enrolment.

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

  • Pregnant women at any gestational age.
  • Participants who are in good health, including those that are carrying multiples, who are 18 years of age or older.
  • Confirmed absence of pre-existing stretch marks on the abdomen.
  • Agree to apply Stratamark according to the prescribed protocol for the duration of the study.
  • Ability to complete remote online surveys via an electronic device.
  • Provide signed to participate in the study.

Exclusion criteria

Exclusion Criteria:

  • Visible stretch marks on the abdomen prior to enrollment.
  • Pre-existing skin conditions (e.g., eczema, psoriasis), on the abdomen that could interfere with product application or assessment of stretch marks.
  • Known or allergy to any of the ingredients in Stratamark.
  • Use of other topical treatments on the abdomen, including but not limited to oils, or creams targeting stretch mark prevention.
  • Participants unable to give , or unable to have written consent provided on their behalf.
  • Participants who cannot administer the treatment or have the treatments administered as per the directions for use.
Terms in these criteria, in plain language(2)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
10,000 participants (estimated)
Target follow-up
30 Weeks
Patient registry
Yes

Groups and cohorts

  • Pregnant women without any pre-existing stretchmarks from pregnancy (abdomen)

    * Pregnant women at any gestational age. * Participants who are in good health, including those that are carrying multiples, who are 18 years of age or older. * Confirmed absence of pre-existing stretch marks on the abdomen. * Agree to apply Stratamark according to the prescribed protocol for the duration of the study. * Ability to complete remote online surveys via an electronic device. * Provide signed informed consent to participate in the study.

    Device: Stratamark

Interventions

  • DeviceStratamark

    Topical film-forming silicone gel

06

What researchers measure

Primary outcomes

  1. Incidence of stretch marks

    The proportion of participants who develop new stretch marks during pregnancy and up to the postpartum period, as assessed by monthly self-reports completed by the participant. The patient reports whether stretch marks have developed by answering yes/no (binary scale).

    Time frame: From enrolment until 6-8 weeks postpartum

Secondary outcomes

  1. Adherence to Product Application

    Tracking participants' adherence to the recommended usage regimen. % Adherence over time measured on a continuous scale from 0-100%, where 100% is better than 0%. Minimum adherence being 0 days and maximum being 7 days.

    Time frame: From enrolment until 6-8 weeks postpartum

07

Study locations

1 of 1 sites recruiting
  • The Pelvic Medicine Centre, St Andrew's War Memorial Hospital
    Brisbane, Australia
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Feb 2026 (actual). Primary completion is estimated for Feb 2027, 12 months after the start.

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

Registered
Mar 2, 2026
First posted
Mar 12, 2026
StartActual
Feb 24, 2026
Primary completionEst.
Feb 2027
CompletionEst.
Feb 2027
Last update
Mar 12, 2026
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 Mar 12, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07467837
Lead sponsor
Stratpharma AG
Collaborators
St Andrew's War Memorial Hospital
Responsible party
Sponsor
First posted
Mar 12, 2026
Start date
Feb 24, 2026
Primary completion
Feb 2027 (estimated)
Completion
Feb 2027 (estimated)
Last update
Mar 12, 2026

Study contacts

Alexandra Zurlinden
Contact
azurlinden@stratpharma.com
+41 (0) 61 691 12 80
Dr Philip Hall, MBBS, MRMed, FRANZCOG, FRCOG,
principal investigator · St. Andrews War Memorial Hospital

Oversight

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

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