4-[3-(Cyanomethyl)-3-(3′,5′-Dimethyl-1H,1’H-[4,4′-Bipyrazol]-1-Yl)Azetidin-1-Yl]-2,5-Difluoro-N-[(2S)-1,1,1-Trifluoropropan-2-Yl]Benzamide

This article summarizes several clinical trials investigating the use of povorcitinib (also known as INCB054707) for treating various inflammatory conditions. Povorcitinib is an oral medication being studied for its potential to treat hidradenitis suppurativa, asthma, and prurigo nodularis. These trials aim to evaluate the drug’s efficacy, safety, and long-term effects in patients with moderate to severe forms of these conditions.

Table of Contents

What is Povorcitinib?

Povorcitinib, also known by its research code INCB054707, is a new medication being developed to treat several inflammatory skin conditions, primarily hidradenitis suppurativa (HS). It is currently undergoing clinical trials to evaluate its safety and effectiveness.[1]

How Povorcitinib Works

Povorcitinib belongs to a class of drugs called JAK inhibitors. JAK stands for Janus kinase, which are enzymes involved in inflammation and immune responses. By inhibiting these enzymes, povorcitinib aims to reduce inflammation and alleviate symptoms in various inflammatory conditions.[2]

Conditions Treated with Povorcitinib

While the primary focus of povorcitinib’s development is hidradenitis suppurativa, clinical trials are also exploring its potential in treating other conditions:

  • Hidradenitis Suppurativa (HS): A chronic inflammatory skin condition that causes painful, swollen bumps in areas where skin rubs together.[1]
  • Prurigo Nodularis (PN): A skin condition characterized by intensely itchy nodules.[3]
  • Moderate to Severe Asthma: A respiratory condition causing breathing difficulties.[4]

Clinical Trials and Research

Several clinical trials are currently underway to evaluate povorcitinib:

  • STOP-HS1 and STOP-HS2: Phase 3 trials for hidradenitis suppurativa, testing the drug’s efficacy and safety over 54 weeks.[1][5]
  • STOP-PN1 and STOP-PN2: Phase 3 trials for prurigo nodularis, evaluating the drug’s effect on itch and skin lesions.[3][6]
  • Asthma Study: A Phase 2 trial assessing povorcitinib’s impact on pulmonary function in patients with inadequately controlled moderate to severe asthma.[4]

How Povorcitinib is Administered

Povorcitinib is taken orally in tablet form. In the clinical trials, it is being tested at different doses, typically administered once daily. The exact dosage may vary depending on the condition being treated and the individual patient’s response.[1]

Efficacy of Povorcitinib

While final results are still pending, early data from clinical trials show promise. For hidradenitis suppurativa, researchers are looking at measures such as:

  • HiSCR (Hidradenitis Suppurativa Clinical Response): A measure of improvement in HS symptoms.[1]
  • Reduction in skin pain: Assessed using a numerical rating scale.[1]
  • Improvement in quality of life: Measured using specific questionnaires.[1]

For prurigo nodularis, key efficacy measures include reduction in itch intensity and improvement in skin lesions.[3]

Safety and Side Effects

As with any medication, povorcitinib may cause side effects. The ongoing clinical trials are carefully monitoring for any adverse events. Common side effects of JAK inhibitors can include upper respiratory tract infections, headache, and nausea. However, the specific side effect profile of povorcitinib is still being determined through these studies.[1]

Patient Eligibility

Eligibility criteria for povorcitinib treatment may include:

  • Diagnosis of moderate to severe hidradenitis suppurativa or prurigo nodularis
  • Age 18 years or older
  • Previous inadequate response to conventional treatments
  • No active severe infections or certain other medical conditions

Specific eligibility criteria may vary depending on the condition being treated and the particular clinical trial.[1][3]

Future Research and Potential

As povorcitinib continues through clinical trials, researchers are exploring its potential in treating various inflammatory conditions. If proven safe and effective, it could offer a new treatment option for patients with hidradenitis suppurativa, prurigo nodularis, and possibly other inflammatory diseases. Long-term studies are also planned to assess the drug’s safety and efficacy over extended periods of use.[7]

Condition Study Phase Primary Endpoint Treatment Duration Key Inclusion Criteria
Hidradenitis Suppurativa Phase 3 Proportion of participants achieving HiSCR at Week 12 54 weeks (12-week placebo-controlled + 42-week extension) Moderate to severe HS, inadequate response to previous treatments
Asthma Phase 2 Absolute change from baseline in pre-BD FEV1 at Week 24 24 weeks (placebo-controlled) Moderate to severe asthma, inadequately controlled on current treatments
Prurigo Nodularis Phase 3 Proportion of participants achieving Itch NRS4 and IGA-CPG-S-TS at Week 24 48 weeks (24-week placebo-controlled + 24-week extension) Moderate to severe prurigo nodularis, inadequate response to previous treatments

Ongoing Clinical Trials on 4-[3-(Cyanomethyl)-3-(3′,5′-Dimethyl-1H,1’H-[4,4′-Bipyrazol]-1-Yl)Azetidin-1-Yl]-2,5-Difluoro-N-[(2S)-1,1,1-Trifluoropropan-2-Yl]Benzamide

  • Long-term safety study of oral povorcitinib in patients with hidradenitis suppurativa, prurigo nodularis, or vitiligo who previously participated in clinical trials

    Recruiting

    3 1 1
    Austria Belgium Bulgaria Czechia Denmark France +7
  • Study on the Effects of Povorcitinib for Patients with Prurigo Nodularis

    Not recruiting

    3 1
    Investigated diseases:
    Belgium Czechia Germany Poland Spain
  • Study on the Effectiveness and Safety of Povorcitinib for Patients with Moderate to Severe Hidradenitis Suppurativa

    Not recruiting

    3 1
    Investigated diseases:
    Bulgaria Denmark France Germany Italy Poland +1
  • Study on the Effects of Povorcitinib for Patients with Prurigo Nodularis

    Not recruiting

    3 1
    Investigated diseases:
    Austria Bulgaria France Germany Italy The Netherlands +1
  • Study on the Long-Term Safety of Povorcitinib for Patients with Moderate to Severe Hidradenitis Suppurativa

    Not recruiting

    3 1 1
    Investigated diseases:
    Austria Belgium Bulgaria Czechia Denmark France +6
  • Study on the Effects of Povorcitinib for Adults with Moderate to Severe Asthma Not Well Controlled

    Not recruiting

    2 1
    Investigated diseases:
    Germany Poland Spain
  • Study on the Effectiveness and Safety of Povorcitinib for Patients with Moderate to Severe Hidradenitis Suppurativa

    Not recruiting

    3 1
    Investigated diseases:
    Austria Belgium Czechia France Germany Greece +3

Glossary

  • Hidradenitis Suppurativa (HS): A chronic skin condition characterized by painful, inflamed lesions in areas where skin rubs together, such as the armpits, groin, and under the breasts.
  • Prurigo Nodularis (PN): A skin condition characterized by hard, itchy lumps (nodules) that develop on the skin as a result of chronic scratching or picking.
  • Asthma: A chronic lung condition that inflames and narrows the airways, causing difficulty breathing, coughing, and wheezing.
  • FEV1: Forced Expiratory Volume in 1 second, a measure of lung function used to assess the severity of asthma.
  • HiSCR: Hidradenitis Suppurativa Clinical Response, a measure used to assess improvement in HS symptoms.
  • Itch NRS: Itch Numerical Rating Scale, a tool used to measure the intensity of itching in skin conditions.
  • IGA-CPG-S: Investigator's Global Assessment of Chronic Prurigo-Severity, a scale used to assess the severity of prurigo nodularis.
  • Placebo-controlled: A study design where some participants receive an inactive substance (placebo) instead of the study drug to compare outcomes.
  • QoL: Quality of Life, a measure of a person's overall well-being and ability to function in daily life.
  • JAK inhibitor: A type of medication that blocks Janus kinase (JAK) enzymes, which are involved in inflammation and immune responses.

References

  1. http://clinicaltrials.eu/trial/study-on-the-effectiveness-and-safety-of-povorcitinib-for-patients-with-moderate-to-severe-hidradenitis-suppurativa/
  2. https://pubmed.ncbi.nlm.nih.gov/34978076
  3. http://clinicaltrials.eu/trial/study-on-the-effects-of-povorcitinib-for-patients-with-prurigo-nodularis-2/
  4. http://clinicaltrials.eu/trial/study-on-the-effects-of-povorcitinib-for-adults-with-moderate-to-severe-asthma-not-well-controlled/
  5. http://clinicaltrials.eu/trial/study-on-the-effectiveness-and-safety-of-povorcitinib-for-patients-with-moderate-to-severe-hidradenitis-suppurativa-2/
  6. http://clinicaltrials.eu/trial/study-on-the-effects-of-povorcitinib-for-patients-with-prurigo-nodularis/
  7. http://clinicaltrials.eu/trial/study-on-the-long-term-safety-of-povorcitinib-for-patients-with-moderate-to-severe-hidradenitis-suppurativa/