Clinical trial NCT04353791: Study of OST-122 in Patients With Moderate to Severe Ulcerative Colitis
Official title: A Phase Ib/IIa, Randomized, Double Blind, Placebo Controlled, Multicenter Clinical Trial to Evaluate the Safety, Pharmacokinetics and Efficacy of Oral Treatment With OST-122 in Patients With Moderate to Severe Ulcerative Colitis
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
PHASE2
Conditions: Ulcerative Colitis Chronic Moderate
Ulcerative Colitis Chronic Severe
Lead sponsor: Oncostellae S.L
Sponsor class: INDUSTRY
First posted: 2020-04-20
Enrollment: 32
Sex: ALL
Minimum age (years): 18
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: SEQUENTIAL
Primary purpose: TREATMENT

Brief summary: A Phase Ib/IIa to evaluate the safety and tolerability of oral treatment with OST-122 in patients with moderate to severe ulcerative colitis over 28 days. This trial will also explore pharmacokinetics (PK) profile and preliminary therapeutic efficacy associated with OST-122 through biomarker analysis and clinical, endoscopic and histologic assessments.

Detailed description: OST-122 is an oral, gut-restricted and subtype-selective Jak3/Tyk2/Ark5 inhibitor for the local treatment of inflammatory bowel disease (IBD) including ulcerative colitis, Crohn's disease and, potentially, fibrotic lesions in Crohn's patients. The compound was well tolerated in a Phase 1 study in healthy volunteers and has been shown to be stable during the GI transit, while no significant plasma levels were detected. The gut-restricted PK profile of OST-122 lowers the risk of systemic toxicities inherent to other JAK inhibitors. In the current proof of concept study, the compound's safety, PK profile and trends of efficacy will be investigated in patients with moderate to severe ulcerative colitis.

Eligibility criteria: Inclusion Criteria:

1. Willing and able to provide written informed consent and capable of understanding and complying with the protocol;
2. Patients male and female ≥ 18 and ≤ 75 years at the time of consent;
3. Patient with previous diagnosis of ulcerative colitis: ulcerative proctitis, left-side ulcerative colitis or extensive/pancolitis (E1, E2 and E3 of Montreal Classification, respectively) established at least 3 months prior to screening and determined by standard clinical, endoscopic, and histological procedures;
4. Demonstrated inadequate response, loss of response, or intolerance to at least one of the following treatments including, aminosalicylates (ASAs), corticosteroids, immunosuppressants, anti-tumor necrosis factor (TNF)-α agents, integrin inhibitor or anti interleukin 12/23;
5. If the subject is currently receiving an oral aminosalicylate, he or she is eligible and can stay on that dose of aminosalicylate provided the dose has been stable for at least 1 week prior to screening;
6. If the subject is currently receiving an oral corticosteroid, he or she is eligible if the dose is equivalent to or less than prednisone 20 mg/day or beclomethasone dipropionate 5 mg/day and stable for at least 1 week prior to Screening visit;
7. Has an endoscopic Mayo subscore of ≥ 2 and a total Mayo score of 5-10 during screening;
8. Women who are not postmenopausal (at least 12 months) or surgically sterile must have a negative pregnancy test at screening and at the end of study and either abstain from sexual intercourse or use a highly effective method of birth control (double barrier) for the duration of the study and after 12 weeks after the last dose of study drug;
9. For men: agreement to remain abstinent or use contraceptive measures and agreement to refrain from donating sperm for the duration of the study and after 12 weeks from the last dose of study drug;
10. Availability for the entire study period, absence of intellectual problems likely to limit the validity of consent to participate in the study or the compliance with protocol requirements; willingness to adhere to the protocol requirements, ability to cooperate adequately and to understand and follow the instructions of the physician or designee.

Exclusion Criteria:

1. Has fulminant colitis, toxic megacolon, primary sclerosing cholangitis, Crohn's disease, history of moderate to severe colitis-associated colonic dysplasia, active peptic ulcer disease;
2. Medications of exclusion:

   1. Topical mesalazine or steroids (i.e., enemas or suppositories) within the 7 days prior to Baseline visit
   2. Azathioprine, 6-mercaptopurine, or methotrexate within 10 days prior to Baseline visit
   3. Intravenous corticosteroids within the 14 days prior to Baseline visit
   4. Tofacitinib or any other JAK inhibitor within 14 days prior to Baseline visit
   5. Anti-diarrheal treatment within 14 days prior to Baseline visit
   6. Received cyclosporine, tacrolimus, mycophenolate mofetil, or thalidomide within 14 days prior to Baseline visit
   7. Adalimumab within the 14 days prior to Baseline visit
   8. Infliximab, golimumab, etanercept, vedolizumab, ustekinumab or certolizumab within the 14 days prior to Baseline visit
   9. NSAIDs on a daily basis from 7 days previous to Baseline visit. Low doses, without anti-inflammatory effect, to treat or prevent other diseases i.e.: ictus, cerebrovascular or cardiovascular diseases, among others; are permitted.
3. Has a current bacterial, parasitic, fungal, or viral infection;
4. Is positive for hepatitis A, B or C, HIV (Human Immunodeficiency Virus) or tuberculosis, as assessed by method available at each site;
5. Patient who has clinically significant diseases and/or infections captured in the medical history or evidence of clinically significant findings on physical examination and/or clinically significant ordinary laboratory evaluations (haematology, biochemistry, and urinalysis) or ECG;
6. Participated in another clinical trial of an investigational drug (or medical device) within 30 days prior to Baseline (or within 60 days prior to Baseline if investigational drug was a biologic product);
7. Demonstrated an inadequate response or loss of response to Tofacitinib or any other JAK inhibitor, with the exception of those patients who after a careful evaluation, the PI considers they may obtain a clinical benefit from the therapy;
8. Use of products, food supplements or medical devices, whose composition includes probiotics in the 1 month prior to Baseline visit;
9. Patient who has prior extensive colonic resection, subtotal or total colectomy or planned surgery for ulcerative colitis;
10. Patient who has past or present fistula or abdominal abscess;
11. Patient who is pregnant or lactating;
12. Inability to comply with study protocol, in opinion of the investigator;
13. History of alcohol, drug or chemical abuse within 6 months prior to Screening visit;
14. History of cancer within the last 5 years. Patients with local basal or squamous cell carcinoma of the skin that has been excised and is considered cured may be included.

Primary outcomes:
measure: Evaluate the safety of OST-122 administered for 28 days in subjects with active UC by assessing the number, severity, and type of adverse events
timeFrame: From baseline to end of the follow-up period
Secondary outcomes:
measure: Cmax: Maximum plasma concentration for OST-122
timeFrame: Day 1 and Day 28
measure: Ctrough: Minimum plasma concentration for OST-122
timeFrame: Day 1 and Day 28
measure: Tmax: Time to reach maximum plasma concentration (Cmax) for OST-122
timeFrame: Day 1 and Day 28
measure: AUC: Area under the plasma-concentration time-curve
timeFrame: Day 1 and Day 28
measure: Percentage of subjects with improvement in Endoscopic Mayo Score
timeFrame: Day 0 and Day 28
measure: Percentage of subjects with improvement in PRO-2
timeFrame: Day 0, Day 7, Day 14, Day 21, Day 28
measure: Study the effect of OST-122 or placebo on faecal calprotectin levels
timeFrame: Day 1, Day 7, Day 14, Day 21, Day 28
measure: Effect of OST-122 or placebo on serum C-reactive protein levels
timeFrame: Day 0, Day 14, Day 28
Other outcomes:
Locations:
city: Santiago de Compostela
country: Spain
facility: Complejo Hospitalario Universitario de Santiago
state: A Coruña
city: Alcorcón
country: Spain
facility: Hospital Universitario Fundación Alcorcón
state: Madrid
city: Pamplona
country: Spain
facility: Complejo Hospitalario de Navarra
state: Navarra
city: Vigo
country: Spain
facility: Hospital Álvaro Cunqueiro
state: Pontevedra
city: Barcelona
country: Spain
facility: Hospital de la Santa Creu i Sant Pau
city: Córdoba
country: Spain
facility: Hospital Reina Sofía
city: Girona
country: Spain
facility: Hospital Universitari Doctor Josep Trueta
city: Huesca
country: Spain
facility: Hospital San Jorge
city: Madrid
country: Spain
facility: Hospital Infanta Leonor
city: Madrid
country: Spain
facility: Hospital Universitario La Paz
city: Oviedo
country: Spain
facility: Hospital Universitario Central de Asturias
city: Sevilla
country: Spain
facility: Hospital Universitario Virgen Macarena
city: Zaragoza
country: Spain
facility: Hospital Clínico Universitario Lozano Blesa
city: Zaragoza
country: Spain
facility: Hospital Universitario Miguel Servet
city: Kropyvnytskyi
country: Ukraine
facility: Medical and Diagnostic Center PE PMC "Acinus"
city: Kyiv
country: Ukraine
facility: Medical Center "Ok!Clinic" of International Institute of Clinical Research LLC
Study officials:
affiliation: Oncostellae S.L
name: Ascensión Heredia Rodríguez, PhD
role: STUDY_DIRECTOR
References: