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Check your eligibility now & get in touch with a study center
CHECK ELIGIBILITYCheck your eligibility now & get in touch with a study center
CHECK ELIGIBILITYCheck your eligibility now & get in touch with a study center
CHECK ELIGIBILITYCheck your eligibility now & get in touch with a study center
CHECK ELIGIBILITYCheck your eligibility now & get in touch with a study center
CHECK ELIGIBILITYDo you have moderate to severe Hidradenitis Suppurativa?
A patient diagnosed with Hidradenitis Suppurativa under his armpit - ©Adobestock
About the Hidradenitis Suppurativa (HS)
Hidradenitis suppurativa (sometimes called acne inversa) is a skin condition that causes small, painful bumps to form under your skin. These bumps typically appear in areas where skin touches skin, like your:
- Underarms
- Groin area
- Inner thighs
- Pubic area
- Buttocks
- Beneath the breasts
- It can less commonly appear on the back of the neck, around the ears, on the abdomen or chest folds
These bumps can take a long time to heal and often come back. Over time, they might create tunnels under your skin and leave scars. The condition usually starts after puberty and can continue for many years. Living with this condition can affect both your daily activities and how you feel emotionally.
What is the study medication?
The investigational medication is given as an injection under the skin, and its efficiency will be compared to placebo (a substance with no medicine) to see if it helps to reduce your symptoms and to identify any possible side effects. This medicine works by blocking certain substances in your body that cause inflammation related to HS (Hidradenitis Suppurativa).
The investigational medication is still being tested, so it's not available for general use yet. The investigational medication can only be used in research studies like these ones and therefore, the investigational medication is not approved for treating people with HS in an everyday clinical setting.
What can you expect during the study?
At your appointments, the following may be performed:
Physical exam
A physical exam, including checking your height, weight, and vital signs
Examination of HS signs and symptoms by a doctor
Blood and urine tests
ECG (electrocardiogram) test
Pregnancy test
Short, daily electronic questionnaires
About skin condition, quality of life (how you're feeling or daily activities) and medication usage and for female participants who menstruate, they will be asked to record their menstrual cycle
FAQs - frequently asked questions:
What is a placebo?
What is a placebo?
A placebo looks like the medicine being tested and is also given in the same way as the medication that is being studied, but it does not have any medicine in it.
Is there a cost to participate?
Is there a cost to participate?
There is no cost to participate. All study-related exams, study-related medications, and study-related medical care are provided. There is no insurance required to take part in this study. You may be compensated for time and travel.
Find a site near you
Am I Eligible?
Sanofi believes that everyone should have the opportunity to take part in clinical trials. It is important to include people who have been historically under-represented in clinical trials. Sanofi is committed to inclusivity in our studies.
If you are interested in learning more about these studies, we encourage you to complete this brief questionnaire to help determine if you may qualify to participate and be referred to a site recruiting in your area for further evaluation.
Version 1.0, Approved 11/2025
Intended for US Audiences Only. ©2025 Sanofi US Services, Inc. All Rights Reserved. The investigational study drug is not approved by health authorities such as the US Food and Drug Administration (FDA) and is still under investigation for the treatment of HS so its effectiveness and safety have not been established.