Clinical trial No longer in our active list Phase 2 Interventional Ages 18 and up

Evaluating AVTX-009 for treating moderate to severe Hidradenitis Suppurativa

Official title: A Phase 2, Randomized, Double-blind, Placebo-controlled, Parallel-group Study to Evaluate the Efficacy and Safety of AVTX-009 in Patients With Moderate to Severe Hidradenitis Suppurativa (LOTUS)

Run by Avalo Therapeutics, Inc. · NCT06603077 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing a new treatment called AVTX-009 to see if it can help people with moderate to severe Hidradenitis Suppurativa feel better.

More Hidradenitis Suppurativa trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment180 (estimated)
SponsorAvalo Therapeutics, Inc.
Industry-sponsored
Locations55 sites (Scottsdale, Arizona and 54 other locations)
Trial IDNCT06603077 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals with moderate to severe Hidradenitis Suppurativa who have experienced symptoms for at least 6 months and have a specific number of inflammatory lesions.

Probably not a fit

Patients with severe comorbid conditions or other active inflammatory diseases that require prohibited medications may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to assess the efficacy and safety of AVTX-009 in patients suffering from moderate to severe Hidradenitis Suppurativa (HS). It is designed as a randomized, double-blind, placebo-controlled study where participants will be assigned to one of two dosing regimens of AVTX-009 or a matching placebo. The study includes a screening period of up to 28 days, a treatment phase lasting up to 16 weeks, and a follow-up period of 6 weeks after the last dose. The total duration for each participant will be 24 weeks.

Why it matters

Potential benefit: If successful, this treatment could significantly improve the management of Hidradenitis Suppurativa, providing relief for patients with moderate to severe symptoms.

How similar studies have gone: Previous studies have shown promise in treating Hidradenitis Suppurativa with similar approaches, but the specific efficacy of AVTX-009 is still being evaluated.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Signs and symptoms of hidradenitis suppurativa (HS) for at least 6 months prior to Screening.
2. At least 5 inflammatory lesions in at least 2 distinct anatomical areas, at least 1 of which is Hurley Stage 2 or 3.

Exclusion Criteria:

1. Has a draining fistula count of ≥ 20.
2. Has another active skin inflammatory condition, infection (viral, bacterial, or fungal), or another active ongoing inflammatory disease (other than HS) that requires treatment with a prohibited medication, which could interfere with the assessment of HS.
3. History of chronic or recurrent infectious disease, including but not limited to chronic renal infection, chronic lung infection, recurrent urinary tract infection, or open, draining or infected skin wounds or ulcers (not related to HS).
4. Has severe, progressive and/or uncontrolled renal, hepatic, hematologic, endocrine, pulmonary, cardiac, neurologic or immunosuppressive disease.

Where it's running

  • Clinical Site 1022
    Scottsdale, Arizona, United States
    Recruiting
  • Clinical Site 1026
    Tucson, Arizona, United States
    Recruiting
  • Clinical Site 1019
    Pomona, California, United States
    Recruiting
  • Clinical Site 1009
    Sacramento, California, United States
    Recruiting
  • Clinical Site 1011
    Washington, District of Columbia, United States
    Recruiting
  • Clinical Site 1029
    Boca Raton, Florida, United States
    Recruiting
Show 44 more locations
  • Clinical Site 1002
    Coral Gables, Florida, United States
    Recruiting
  • Clinical Site 1015
    Maitland, Florida, United States
    Recruiting
  • Clinical Site 1027
    North Miami Beach, Florida, United States
    Recruiting
  • Clinical Site 1013
    Tampa, Florida, United States
    Recruiting
  • Clinical Site 1008
    Savannah, Georgia, United States
    Recruiting
  • Clinical Site 1014
    Chicago, Illinois, United States
    Recruiting
  • Clinical Site 1028
    West Lafayette, Indiana, United States
    Recruiting
  • Clinical Site 1024
    Murray, Kentucky, United States
    Recruiting
  • Clinical Site 1001
    Boston, Massachusetts, United States
    Recruiting
  • Clinical Site 1007
    Ft. Gratiot, Michigan, United States
    Recruiting
  • Clinical Site 1003
    Portsmouth, New Hampshire, United States
    Recruiting
  • Clinical Site 1023
    Bronx, New York, United States
    Recruiting
  • Clinical Site 1016
    New York, New York, United States
    Recruiting
  • Clinical Site 1020
    Cincinnati, Ohio, United States
    Recruiting
  • Clinical Site 1010
    Cleveland, Ohio, United States
    Recruiting
  • Clinical Site 1017
    Dublin, Ohio, United States
    Recruiting
  • Clinical Site 1004
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Clinical Site 1018
    Johnston, Rhode Island, United States
    Recruiting
  • Clinical Site 1005
    Greenville, South Carolina, United States
    Recruiting
  • Clinical Site 1012
    Arlington, Texas, United States
    Recruiting
  • Clinical Site 1203
    Darlinghurst, New South Wales, Australia
    Recruiting
  • Clinical Site 1202
    Carlton, Victoria, Australia
    Recruiting
  • Clinical Site 1303
    Sofia, Sofia-Grad, Bulgaria
    Recruiting
  • Clinical Site 1302
    Lovech, Bulgaria
    Recruiting
  • Clinical Site 1301
    Pleven, Bulgaria
    Recruiting
  • Clinical Site 1304
    Stara Zagora, Bulgaria
    Recruiting
  • Clinical Site 1105
    Edmonton, Alberta, Canada
    Recruiting
  • Clinical Site 1103
    Barrie, Ontario, Canada
    Recruiting
  • Clinical Site 1104
    Hamilton, Ontario, Canada
    Recruiting
  • Clinical Site 1107
    London, Ontario, Canada
    Recruiting
  • Clinical Site 1106
    Toronto, Ontario, Canada
    Recruiting
  • Clinical Site 1101
    Saskatoon, Saskatchewan, Canada
    Recruiting
  • Clinical Site 1401
    Praha 10, Prague, Czech Republic
    Recruiting
  • Clinical Site 1402
    Praha 5, Prague, Czech Republic
    Recruiting
  • Clinical Site 1503
    Antony, Hauts-de-Seine, France
    Recruiting
  • Clinical Site 1505
    Amiens, Picardie, France
    Recruiting
  • Clinical Site 1501
    Rouen Cedex, Seine-Maritime, France
    Recruiting
  • Clinical Site 1901
    Torrette, Ancona, Italy
    Recruiting
  • Clinical Site 1903
    Rozzano, Milano, Italy
    Recruiting
  • Clinical Site 1904
    Roma, Italy
    Recruiting
  • Clinical Site 1702
    Wroclaw, Kujawsko-Pomorskie, Poland
    Recruiting
  • Clinical Site 1703
    Bialystok, Podlaskie, Poland
    Recruiting
  • Clinical Site 1701
    Warszawa, Pomorskie, Poland
    Recruiting
  • Clinical Site 1705
    Warszawa, Pomorskie, Poland
    Recruiting

+5 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.