{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T14:52:44Z","timestamp":1788360764323,"version":"build-2803163510"},"reference-count":19,"publisher":"Georg Thieme Verlag KG","issue":"06","license":[{"start":{"date-parts":[[2023,6,17]],"date-time":"2023-06-17T00:00:00Z","timestamp":1686960000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neuropediatrics"],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Neuronal ceroid lipofuscinosis type 2 (CLN2 disease) is a rare pediatric disorder associated with rapid neurodegeneration, and premature death in adolescence. An effective enzyme replacement therapy (cerliponase alfa) has been approved that can reduce this predictable neurological decline. The nonspecific early symptoms of CLN2 disease frequently delay diagnosis and appropriate management. Seizures are generally recognized as the first presenting symptom of CLN2 disease, but emerging data show that language delay may precede this. An improved understanding of language deficits in the earliest stage of CLN2 disease may support the early identification of patients. In this article, CLN2 disease experts examine how language development is affected by CLN2 disease in their clinical practices. The authors' experiences highlighted the timings of first words and first use of sentences, and language stagnation as key features of language deficits in CLN2 disease, and how deficits in language may be an earlier sign of the disease than seizures. Potential challenges in identifying early language deficits include assessing patients with other complex needs, and recognizing that a child's language abilities are not within normal parameters given the variability of language development in young children. CLN2 disease should be considered in children presenting with language delay and\/or seizures to facilitate earlier diagnosis and access to treatment that can significantly reduce morbidity.<\/jats:p>","DOI":"10.1055\/s-0043-1770143","type":"journal-article","created":{"date-parts":[[2023,6,17]],"date-time":"2023-06-17T22:30:20Z","timestamp":1687041020000},"page":"402-406","source":"Crossref","is-referenced-by-count":12,"title":["Language Delay in Patients with CLN2 Disease: Could It Support Earlier Diagnosis?"],"prefix":"10.1055","volume":"54","author":[{"given":"Miriam","family":"Nickel","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"Gissen","sequence":"additional","affiliation":[{"name":"National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, University College London, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rebecca","family":"Greenaway","sequence":"additional","affiliation":[{"name":"Neurodisability Service, Great Ormond Street Hospital, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simona","family":"Cappelletti","sequence":"additional","affiliation":[{"name":"Rare and Complex Epilepsy Unit, Bambino Ges\u00f9 Children's Hospital, IRCCS, Full Member of European Reference Network: EpiCARE, Rome, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christiane","family":"Hamborg","sequence":"additional","affiliation":[{"name":"Hirtenweg School, Hamburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benedetta","family":"Ragni","sequence":"additional","affiliation":[{"name":"Rare and Complex Epilepsy Unit, Bambino Ges\u00f9 Children's Hospital, IRCCS, Full Member of European Reference Network: EpiCARE, Rome, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tanja","family":"Ribitzki","sequence":"additional","affiliation":[{"name":"Hirtenweg School, Hamburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angela","family":"Schulz","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ilaria","family":"Tondo","sequence":"additional","affiliation":[{"name":"Rare and Complex Epilepsy Unit, Bambino Ges\u00f9 Children's Hospital, IRCCS, Full Member of European Reference Network: EpiCARE, Rome, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Specchio","sequence":"additional","affiliation":[{"name":"Rare and Complex Epilepsy Unit, Bambino Ges\u00f9 Children's Hospital, IRCCS, Full Member of European Reference Network: EpiCARE, Rome, 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