Efficacy and Safety Study Comparing CPL409116 to Placebo in Participants With Active Rheumatoid Arthritis

  • End date
    Aug 31, 2023
  • participants needed
  • sponsor
    Celon Pharma SA
Updated on 25 May 2022
autoimmune disease
psoriatic arthritis


The purpose of the following phase II clinical trial is to determine safety and effectiveness of Janus kinases and Rho-kinases inhibitor (JAK/ROCKi) in patients with Rheumatoid arthritis after oral administration of investigational medicinal product (IMP) called CPL409116. JAK inhibitors are a new class of small molecule drugs that modulate inflammatory pathways by blocking one or more JAK receptors. In recent years, JAK inhibitors have emerged as a new option for the treatment of various inflammatory diseases, including rheumatoid arthritis, psoriatic arthritis, skin disorders and others. CPL409116 inhibits JAK1 and JAK3 with less inhibitory activity against JAK2 and Tyk2. Inhibition of these kinases decreases inflammatory cytokine release which in turn decreases lymphocyte activation and proliferation. Moreover, CPL409116 blocks Rho-kinases (ROCKs), which are involved in diverse cellular processes including actin cytoskeleton organization, cell adhesion and motility, proliferation, apoptosis as well as smooth muscle contraction. ROCKs signalling is one of the major pathways implicated in the pathogenesis of cardiovascular, renal as well as fibrotic diseases. However recent data indicate their role in immune cell regulation and inflammatory disease development. CPL409116 was designed predominantly for the therapy of immune-related diseases: rheumatoid arthritis (RA) or psoriasis but the unique mode of action of this compound may be beneficial for patients suffering from fibrotic complications developing on the basis of autoimmune diseases. RA is a chronic systemic autoimmune disease characterised by persistent joint inflammation leading to loss of joint function as well as cartilage and bone damage. Chronic, progressive course of the disease results in disability, reduced quality of life, as well as higher comorbidity and mortality rates. It is well documented that JAK kinases play a pivotal role in cytokine receptor signalling to phosphorylate and activate signal transducer and activator of transcription (STAT) proteins. Several of these JAK-controlled cytokine receptor pathways are immediately involved in the initiation and progression of RA pathogenesis. After preclinical studies conducted by Celon Pharma, CPL409116 could have been classified as a good clinical candidate for the treatment of patients with RA and next, results obtained after the phase I clinical trial in healthy volunteers confirmed its safety and a good pharmacokinetic profile.


This is to be a 12-week, phase II, multicentre, randomised, double blind, efficacy and safety study of CPL409116 in participants with active rheumatoid arthritis who are taking methotrexate but have an inadequate response to this drug. Eligible subjects are to be randomised into one of the 4 treatment arms (60 mg BID, 120 mg BID, 240 mg BID of CPL409116 or palcebo) and approximately 100 male and female subjects are to be enrolled in the study (25 patients per arm). The study is to include the screening period, the treatment period and the follow-up period. In all treatment arms the investigated product/ placebo is to be administered orally for 12 weeks in a blinded fashion. In order to maintain the blind and minimize bias, all subjects will receive the same number and types of tablets each day of treatment. In the screening period, patients are to undergo screening assessments from Day -28 to Day 0. Rolling admission is to be employed in this study. Patients that fulfil all the inclusion criteria and none of the exclusion criteria will be considered eligible for this study. During the treatment period, patients are to be dosed with 60, 120, 240 mg CPL409116 administered twice a day or placebo administered twice a day for 85 consecutive days (Day 1 to Day 85). The MTX dosage which should be orally or parenterally administered by participants during the study and before the start of the study should be in the range of 15-25 mg/ week, which is typical of current clinical practice. MTX must be applied for at least 12 weeks prior to Screening, and with no change in dosage and route of administration for at least 8 weeks prior to Day 1/ baseline. Within the follow-up period patients are to undergo safety assessment for 4 weeks after the last dose of IMP.

Condition Rheumatoid Arthritis
Treatment Placebo, CPL409116
Clinical Study IdentifierNCT05374785
SponsorCelon Pharma SA
Last Modified on25 May 2022


Yes No Not Sure

Inclusion Criteria

Age ≥18 and ≤75 years at the time of signing informed consent
Meets ACR/EULAR 2010 RA Classification Criteria with a duration of RA disease of ≥6 months at time of screening and participant not diagnosed before 16 years of age
Must have active disease at both screening and baseline, as defined by having all three listed below
≥ 6/68 tender/painful joints (TJC)
≥ 6/66 swollen joints (SJC)
DAS28> 3,2
NOTE: If surgical treatment of a joint has been performed, that joint cannot be
counted in the TJC or SJC for enrolment purposes
Must have a C-reactive protein (CRP) measurement ≥7 mg/L at screening
Must meet Class I, II or III of the ACR 1991 Revised Criteria for Global Functional
Status in RA
Must have inadequate response, despite currently taking Methotrexate (MTX): weekly
-25 mg oral or injected (subcutaneous or intramuscular) for at least 12 weeks prior
to Screening, and with no change in dosage and route of administration for at least 8
weeks prior to Day 1/ baseline. A lower dose of ≥10 mg/week is acceptable if reduced
for reasons of side effects or intolerance to MTX, e.g. nausea/vomiting, hepatic or
hematologic toxicity (there must be clear documentation in the medical record)
If using oral GCS must be on stable dose (equivalent to ≤10mg/day of prednisone) for
at least 4 weeks prior to Day 1/ baseline
If using NSAIDs must be on stable dose for at least 4 weeks prior to Day 1/ baseline
A woman must be either
Not of childbearing potential
postmenopausal (>45 years of age with amenorrhea for at least 12 months
without using exogenous hormonal contraception and with FSH ≥ 40 IU/L)
permanently sterile (hysterectomy, bilateral salpingectomy; bilateral
oophorectomy); or otherwise be incapable of pregnancy
NOTE: premenopausal women who have had a bilateral tubal ligation/occlusion are
considered capable of becoming pregnant
Of childbearing potential and using a double contraception including a barrier
method (condom or occlusive cap) and a highly effective method of birth control
(listed below)
NOTE: highly effective methods of contraception are defined as
established use (i.e. at least 8 weeks prior to Day 1) of combined (estrogen and
progesterone) hormonal contraception associated with inhibition of ovulation
(oral, intravaginal, transdermal, injectable) or progesterone-only hormone
contraception associated with inhibition of ovulation (oral, injectable)
intrauterine device (IUD) or intrauterine hormone-releasing system (IUS)
bilateral tubal occlusion/ligation
vasectomized partner (vasectomized partner should be the sole partner for that
subject and the absence of sperm should be confirmed)
NOTE: sexual abstinence, defined as refraining from heterosexual intercourse
throughout the study and for 12 weeks after the last IMP dose, is acceptable as a sole
contraception method when this is in line with the preferred and usual lifestyle of
the subject
Participant (a man) who is sexually active with a woman of childbearing potential must
agree to use a double contraception including a barrier method (male condom) and a
highly effective method of contraception (highly effective method of contraception are
listed above) during the study and 12 weeks after the last dose of CPL409116/ placebo
NOTE: Male subjects are responsible for informing his partner(s) of the risk of
becoming pregnant and for reporting any pregnancy to the study doctor
NOTE: Participants (males and females) are furthermore willing to use contraception
methods for 12 weeks after the last dose of CPL409116/ placebo administration. It is
crucial to maintain appropriate methods of contraception if it is planned to continue
methotrexate administration after the end of the study
A woman of childbearing potential must have a negative blood pregnancy test (β -human
chorionic gonadotropin [β-hCG]) at screening and negative urine pregnancy test on
Day1/ baseline
Informed Consent Form signed and dated prior to Screening evaluations
Ability and willingness to comply with the requirements of the study Protocol
Negative result of the COVID-19 RT-PCR test (real-time reverse transcription
polymerase chain reaction) for the qualitative detection of nucleic acid coming from
SARS- CoV-2 before inclusion to the study (Screening- 72 h before Day1/ baseline)

Exclusion Criteria

Has had a serious infection (e.g. sepsis, pneumonia, pyelonephritis or any other
serious infection as per Investigator's judgement), or has been hospitalized or
received intravenous antibiotics for an infection within 3 months prior to Day 1
Any active infection including localized infections within 2 weeks prior to baseline
History of opportunistic or recurrent (3 or more of the same infection requiring
anti-infective treatment in any rolling 12-month period) infection
History of chronic infections requiring anti-infective treatment within 6 months prior
to Screening
Subjects with a high risk of infection in the Investigator's opinion (e.g. subjects
with leg ulcers, indwelling urinary catheter)
History of infected joint prosthesis or other implanted device with the retention of
prosthesis or device in situ
Symptomatic herpes zoster within 3 months prior to Screening
History of disseminated herpes simplex infection or disseminated/complicated herpes
Hereditary or acquired immunodeficiency disorder, including immunoglobulin deficiency
Known infection with human immunodeficiency virus (HIV) or positive test at Screening
Presence of any of the following laboratory abnormalities at Screening
Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels ≥1.5 x
the upper limit of normal (ULN)
Absolute neutrophil count of <1.5 x 10^9/L (<1500/mm^3)
Absolute lymphocyte count of <0.75 x 10^9/L (<750/mm^3)
Absolute white blood cell (WBC) count of < 3.0 x 10^9 /L (<3000/mm^3)
Hemoglobin <9.0 g/dL (90 g/L)
Thrombocytopenia, as defined by a platelet count <100 x 10^9/L (< 100 000/mm^3)
at Screening
Total bilirubin ≥1.5× the upper limit of normal (ULN)
Current or history of clinically significant (per Investigator's judgment) liver or
biliary disease or significantly abnormal liver function test at screening (ALT or AST
level ≥ 1.5 x ULN and/or total bilirubin ≥1,5× the upper limit of normal (ULN)
Current acute or chronic HCV and/or HBV infection
Subjects who are seropositive for antibodies to hepatitis C virus (at Screening)
may be allowed to participate in the study provided they have 2 negative HCV RNA
test results 6 months apart after completing antiviral treatment and prior to
Screening, and have a third negative HCV RNA test result at Screening
HBV serology
a positive result for HBsAg will be exclusionary
a positive result for anti-HBc antibodies in subjects negative for HBsAg
requires HBV DNA testing. A positive test result for HBV DNA will be
For subjects who are negative for HBsAg and anti-HBc antibodies and has had
a HBV vaccination a positive test result for anti-HBs antibodies is expected
such subjects may be enrolled without HBV DNA testing. In non-vaccinated
patients positive for anti-HBs antibodies HBV DNA testing is required
a positive result for HBV DNA will be exclusionary
NOTE: enrolled subjects positive for anti-HBc antibodies and/or anti-HBs antibodies
(except for vaccinated subjects negative for anti-HBc antibodies and positive for
anti-HBs antibodies) will have repeated HBV DNA testing at week 6 (or early
termination visit) and last follow-up visit. A positive result for HBV DNA testing in
these subjects will require immediate interruption of study drug and a hepatologist
Current or history of clinically significant renal disease (per investigation
judgment) or eGFR<60mL/min/1.73m^2
Breast cancer or other malignancy (including lymphoma, leukemia) within the past 5
years except for cervical carcinoma in situ that has been completely resected with no
evidence of recurrence or metastatic disease for at least 12 months or cured basal
cell carcinoma with no evidence of recurrence for at least 12 months
History of major organ transplant (e.g. kidney, heart, liver, lung) or hematopoietic
stem cell/bone marrow transplant
History of lymphoproliferative disease or signs/ symptoms suggestive of possible
lymphoproliferative disease, including splenomegaly of lymphadenopathy
History or current moderate to severe congestive heart failure (New York Heart
Association [NYHA] class III or IV), or within the last 6 months, a cerebrovascular
accident, myocardial infarction, unstable angina, unstable arrhythmia or any other
cardiovascular condition which, in the opinion of the investigator, would put the
subject at risk by participation in the study
History or presence of other significant concomitant illness that, according to the
Investigator's judgment, would place the participant at unacceptable risk when taking
investigational product or could interfere with the interpretation of data
History of other (than RA) chronic inflammatory arthritis or systemic autoimmune
disorder other than Sjögren's syndrome secondary to RA, that may confound the
evaluation of the effect of the study intervention such as mixed connective tissue
disease, psoriatic arthritis, juvenile chronic arthritis, spondyloarthritis, Felty's
Syndrome, systemic lupus erythematosus, scleroderma, Crohn's disease, ulcerative
colitis, or vasculitis
Presence of fibromyalgia that, in the Investigator's opinion, would make it difficult
to appropriately assess RA activity for the purposes of this study
Undergone any major surgery within 8 weeks prior to study entry or will require major
surgery during the study that, in the opinion of the Investigator would pose an
unacceptable risk to the participant
Current or previous active Mycobacterium tuberculosis (TB) regardless of treatment
Evidence of latent TB (as documented by a positive QuantiFERON-TB test at Screening
no findings on medical history or clinical examination consistent with active TB, and
a normal chest radiograph)
Previous household contact with a person with active tuberculosis (TB) and did not
receive appropriate and documented prophylaxis for TB
Clinically significant multiple or severe drug allergies or severe post-treatment
hypersensitivity reactions (including, but not limited to erythema multiforme major
linear immunoglobulin A dermatosis, toxic epidermal necrolysis, and exfoliative
Inherited or acquired thrombophilia and/ or current or history of thromboembolic
events/ disease
Screening 12-lead ECG that demonstrates relevant abnormalities that, in the opinion of
the Investigator, are clinically significant and indicate an unacceptable risk for the
subject's participation in the study (eg, QTc >450 msec or a QRS interval >120 msec)
If QTc exceeds 450 msec, or QRS exceeds 120 msec, the ECG should be repeated two more
times and the average of the three QTc or QRS values should be used to determine the
subject's eligibility
Pregnancy or breast- feeding
NOTE: Women of childbearing potential must have a negative pregnancy test at
Screening, at randomization and at scheduled visits throughout the study
Narcotic and alcohol addiction or abuse (more than 14 alcohol units per week: one unit
= 150 mL wine, 360 mL beer, 45 mL 40 % spirits) (UK guidelines)
Positive drug screen or alcohol breath tests
Blood donation within the last month before Day1/ baseline
Current therapy with any disease-modifying antirheumatic drugs (DMARDs) other than
MTX. All DMARDs (except for MTX) must be ceased before Day 1/ baseline, as follows
month before: etanercept, sulfasalazine, chloroquine/ hydroksychloroquine
months before: leflunomide (4 weeks in case of cholestyramine washout)
months before: adalimumab, golimumab, infliksimab, certolizumab, tocilizumab
gold, cyclosporine, penicillamine, azathioprine
Previous use of (at any time)
Previous use of JAK inhibitors
Previous use of biologic agent other than tocilizumab or TNF-alpha inhibitor. Previous
use of one (and only one) biologic agent (tocilizumab or TNF-alpha inhibitor) is
allowed if administered for less than 3 months or ceased because of other than lack of
effectiveness causes
Vaccinated with a live vaccine (i.e. containing live or attenuated pathogens) within 3
months before Day 1/ baseline or necessity to vaccinate during the clinical trial
NOTE: Investigators should ensure that all study enrolment criteria have been met at
Screening and on Day 1. If a patient status after Screening changes at baseline (Day 1)
such that the study patient no longer meets all eligibility criteria, then the patient
should be excluded from participation in the study (such patient is to be considered as
screen failure). History or presence of any other medical or psychiatric condition, or
laboratory abnormality that, in the opinion of the Investigator, may place the subject at
unacceptable risk for study participation or may interfere with the study results should be
considered as an exclusion criterion
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