From Discovery to Innovative Translational Approaches in 80 Years of Fragile X Syndrome Research.
Mathijs B van der Lei, R Frank Kooy
https://pubmed.ncbi.nlm.nih.gov/40299377/Actively Recruiting
Led by Connecta Therapeutics, S.L. · Updated on 2026-07-17
30
Participants Needed
2
Research Sites
N/A
Total Duration
Researchers are evaluating CTH120 in adult males aged 18 to 45 with Fragile X syndrome to assess its safety, tolerability, and preliminary effectiveness. This Phase IIa clinical trial includes 30 participants randomized equally to receive either CTH120 or a placebo. The study is sponsored by Connecta Therapeutics, S.L., aiming to better understand potential treatment effects in this specific population. Participants will receive either CTH120 75 mg capsules or placebo capsules twice daily after meals for approximately 8 weeks. The drug and placebo are taken orally with water after breakfast and dinner, spaced about 12 hours apart. The trial includes a screening period of up to 28 days before treatment and a safety follow-up lasting about 14 days after treatment ends, with a total participation duration of approximately 3 months per participant. During the study, participants will undergo multiple assessments including monitoring for adverse events, vital signs, ECGs, and laboratory tests at several time points. Cognitive and behavioral evaluations, quality of life questionnaires, and biomarker analyses will be conducted at baseline and during treatment. Researchers will monitor treatment-emergent adverse events and clinically significant abnormalities throughout, with a final safety follow-up visit to ensure participant well-being.
CONDITIONS
Safety, Tolerability, and Preliminary Effectiveness of CTH120 in Fragile X Syndrome
J
Josep Prous, PhD
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Connecta Therapeutics, S.L.
Lead Sponsor
Hospital del Mar Research Institute (IMIM)
Collaborating Sponsor
You may qualify if you...
You will not qualify if you...
Duration - Up to 28 days
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - 56 days (±2 days)
Participants take CTH120 or placebo capsules orally twice daily after breakfast and dinner for about 8 weeks.
Multiple visits including Day 15, Day 28, Day 42, and Day 56
Duration - 14 days (±2 days)
Participants have safety monitoring visits after treatment ends to check for any adverse effects.
1 visit (in-person)
Study Type
INTERVENTIONAL
Masking
QUADRUPLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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https://pubmed.ncbi.nlm.nih.gov/34440640/Connecta Therapeutics, S.L.
Lead Sponsor
Hospital del Mar Research Institute (IMIM)
Collaborating Sponsor