GTEP01 SLC6A1-NDD Prospective Longitudinal Natural History Study Brief summary The overall objective of this prospective longitudinal natural history study is to collect clinical data to characterize and evaluate the natural course of SLC6A1-NDD and assess the feasibility of certain assessments for the purpose of conducting future clinical studies in patients with this disease. Medical Condition SLC6A1 neurodevelopmental disorder (NDD) Min. Age - Max. Age 17 Years Who Can Join? All Status Not yet recruiting Inclusion criteria - Patient with a diagnosis of SLC6A1-NDD characterized by epilepsy, global developmental delay, autism spectrum disorder, or intellectual disability, with a documented history of an SLC6A1 mutation, defined as pathogenic or likely pathogenic by the Investigator. - Patients should not be older than 17 years at time of assent/consent. - Patients under the age of 18 years with legal guardians providing informed consent. Assent will be obtained from any patients judged to have sufficient capacity to provide assent at the discretion of the Investigator. - Patient and patient’s caregiver are willing and able to comply with study requirements (including diary completion and visit schedule). Exclusion criteria - Patients and their caregivers are unable to complete follow-up visits. - Patients with a history of an alternate diagnosis for disease, including a genetic cause, which is known to contribute to epilepsy or NDD. - Patient is currently receiving an investigational product(s) other than 4-phenylbutyrate or has received an investigational product within 30 days or within <5 times the half-life of the investigational product, whichever is longer, prior to the Enrollment Visit. Study Medication Description Study Medication: UCB2744 Other Descriptive Name: UCB2744 Placebo No Comparator: No Share this study Share Facebook Share Twitter Share LinkedIn Refer to a friend Via email Study Dates March 2026 Planned Start Date of Enrollment May 2029 Planned Study Completion Date General Information Study ID: GTEP01 CT.gov Number: NCT07531511 Phase: N/A Locations Click here to find out where the clinical study is conducted Interested in our clinical studies? Just contact us Austria UCBCares.AT@ucb.com +43 (0) 1 291 80 08 0800-296176 (freephone) Belgium UCBCares.BE@ucb.com +32 2 559 92 00 0800 38 008 (freephone) www.ucbcares.be Bulgaria UCBCares.BG@ucb.com +359 2 962 9933 www.ucbcares.bg Canada +1 866 709 8444 Czech Republic UCBCares.CZ@ucb.com +420 221 773 442 800 144 395 (freephone) www.ucbcares.cz Denmark UCBCares.DK@ucb.com +45 32462480 80 253827 (freephone) www.ucbcares.dk Finland UCBCares.FI@ucb.com +358 942733300 0800 9 13353 (freephone) www.ucbcares.fi France UCBCares.FR@ucb.com +33 1 47 29 45 55 0 805 222 949 (freephone) www.ucbcares.fr Germany UCBCares.DE@ucb.com +49 2173 48 48 48 www.ucbcares.de Greece UCBCares.GR@ucb.com +30 21 0997 4200 0080 012 9910 (freephone) www.ucbcares.gr Hungary UCBCares.HU@ucb.com +36 1 472 5060 06 80 021 486 (freephone) www.ucbcares.hu Ireland UCBCares.IE@ucb.com +353 1 463 2371 1800 93 00 75 (freephone) www.ucbcares.co.uk Italy UCBCares.IT@ucb.com +39 02 3007 9300 8009-86932 (freephone) www.ucbcares.it Japan https://ucbcares.jp Luxemburg UCBCares.LU@ucb.com +32 2 559 92 12 8002 3204 (freephone) Norway UCBCares.NO@ucb.com +45 32462482 800-10101 (freephone) www.ucbcares.no Poland UCBCares.PL@ucb.com +48 22 596 97 97 00 800 121 68 25 (freephone) www.ucbcares.pl Portugal UCBCares.PT@ucb.com +351 213 025 300 800-8-56033 (freephone) Romania +4021 300 19 07 Slovakia UCBCares.SK@ucb.com +421 2 592 020 23 0800 002 566 (freephone) www.ucbcares.sk Spain UCBCares.ES@ucb.com +34 915 70 06 49 8000-99684 (freephone) www.ucbcares.es Sweden UCBCares.SE@ucb.com +45 32462481 0200 898 671 (freephone) www.ucbcares.se Switzerland +41 58 822 3180 The Netherlands UCBCares.NL@ucb.com +31 76 573 1130 0800 3434335 (freephone) www.ucbcares.nl UK UCBCares.UK@ucb.com +44 1753 777 100 0800 279 3177 (freephone) www.ucbcares.co.uk USA UCBCares@ucb.com +1-844-599-2273 www.ucb-usa.com/Patients/Patients Email Print Back to results