RecruitingPhase 1ACTRN12625000269437

A Phase 1c Study Investigating the SAfety and TolErability of a LysyL Oxidase InhibiTor (PXS-6302) in the amElioration of Keloids


Sponsor

University of Western Australia

Enrollment

20 participants

Start Date

Jun 20, 2025

Study Type

Interventional

Conditions

Summary

In this study up to 20 subjects will be enrolled at a single study centre. The study will consist of a screening period, placebo run-in period, treatment period and follow-up period. Participants will all have active keloids. Participants will be provided with PXS-6302 to apply topically (and placebo if >1 keloid requires treatment) for a period of 3 months. Safety will be assessed as frequency/type of adverse events. Exploratory measures to assess changes in the keloid (size/symptoms) will also be used.


Eligibility

Sex: Both males and femalesMin Age: 18 YearssMax Age: 60 Yearss

Inclusion Criteria4

  • Male or female and aged over 18 years at the screening visit;
  • Active keloid greater than or equal to 5cm2 and less than or equal to 25cm2 in area that has persisted for a minimum of 4 weeks;
  • A male subject is eligible to participate if he agrees to using one medically approved (i.e., mechanical or pharmacological) contraceptive measure and have their partners agree to an additional barrier method of contraception for the duration of the study and for 90 days after the last administration of study drug; Women of childbearing potential must use effective contraception. Adequate methods of contraception include use of oral contraceptives or Depo-Provera, with an additional barrier method (diaphragm with spermicidal gel or condoms with spermicide), double-barrier methods (diaphragm with spermicidal gel and condoms with spermicide), partner vasectomy, and total abstinence;
  • Able to understand, give consent, and comply with all scheduled study visits, procedures and restrictions. If required, an interpreter will be made available.

Exclusion Criteria13

  • Auricular keloids;
  • Clinically significant gastrointestinal, renal, hepatic, neurologic, hematologic, endocrine, oncologic, pulmonary, immunologic, psychiatric, skin, or cardiovascular disease or any other condition, that, in the opinion of the Investigator, would jeopardize the safety of the subject or impact the validity of the study results;
  • Current acute skin condition (e.g.: eczema, psoriasis, broken skin, wounds etc.);
  • Pregnant or breastfeeding women;
  • Received treatment of keloid in the last 3 months;
  • History of immediate hypersensitivity to any medication or currently suffers from clinically significant systemic allergic disease;
  • Are using or planning to use medications that will be applied to the area being treated in this study. There is no exclusion for other medications.
  • At Investigator discretion if systolic blood pressure 140 mmHg, diastolic blood pressure 95 mmHg, and heart rate 100 bpm;
  • At investigator’s discretion if Alanine aminotransferase (ALT), aspartate aminotransferase (AST), or bilirubin >1.5 × upper limit of normal. Test may be repeated once at the discretion of the Investigator;
  • At investigator discretion if haemoglobin, white blood cell (WBC), neutrophils, platelets < 1.5x lower limit of normal. Test may be repeated once at the discretion of the Investigator;
  • Evidence of significant renal insufficiency, as indicated by an estimated creatinine clearance using the Cockcroft-Gault formula < 60 mL/min at Screening;
  • Receipt of blood, or loss or donation of 450 mL or more of blood within 90 days or plasma donation within 14 days before the first dose administration;
  • Have received an experimental therapy within 30 days or 5 half-lives of the study drug, whichever is longer, prior to dosing.

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Interventions

All participants will self-administer placebo (0% PXS-6302 cream) 4 times per week for a period of 4 weeks. At the end of this 4 week period the participant will be provided either with placebo and PX

All participants will self-administer placebo (0% PXS-6302 cream) 4 times per week for a period of 4 weeks. At the end of this 4 week period the participant will be provided either with placebo and PXS-6302 (2%) cream or with PXS-6302 (2%) cream only dependent on whether the participant has >1 or only 1 keloid. If the participant has >1 keloid, two keloids will be treated and placebo/PXS-6302 randomised to one site each. All participants with only 1 keloid will receive PXS-6302 treatment and will not be randomised. During the treatment phase PXS-6302 - an irreversible pan-lysyl oxidase inhibitor will be applied topically four times per week to the keloid as a 2% cream formulation with a volume of 100ul per 5cm2 surface area of keloid being treated for a total duration of 13 weeks (3 months) of treatment. Participants will self-administer the treatment and adherence monitored through return of applicators at each follow-up appointment.


Locations(1)

Fiona Stanley Hospital - Murdoch

WA, Australia

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ACTRN12625000269437


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