
MISDIAGNOSIS OF TRACHER-COLLINS SYNDROME INITIALLY ATTRIBUTED TO DRUG TERATOGENICITY: A MOROCCAN CASE REPORT Lamzouri A, EL Rherbi A, Ratbi I, Laarabi FZ, Chahboune R, Elalaoui SC, Hamdaoui H, Bencheikh RS, Sefiani *Corresponding Author: Afaf Lamzouri (MD, Ass. Prof.): Department of Medical Genetics and Oncogenetics, Mohammed VI University Hospital, Faculty of Medicine and Pharmacy of Tangier, BP 365 km 15 Gzenaya Tangier, Morocco. Fax: 05.39.39.21.46. Phone number: 00 212 6 10 77 79 59. Email: lamzouriafaf@hotmail.com / lamzouriafaf82@gmail.com / a.lamzouri@uae.ac.ma page: 69 download article in pdf format
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Abstract
Background
Treacher Collins syndrome (TCS) is a rare congenital disorder of craniofacial development characterized by
numerous developmental anomalies that are restricted to
the head and neck. Most TCS cases are inherited in an autosomal dominant manner. The diagnosis of TCS relies on
clinical and radiographic findings. The four genes involved
in TCS are TCOF1, POLR1D, POLR1C, and POLR1B.
Case presentation
In this report, we present the case of a 7-year-old Moroccan boy who exhibited distinctive dysmorphic features,
including coloboma and zygomatic bone hypoplasia. Upon
genetic analysis, a mutation in the TCOF1 gene was identified, conclusively confirming the presence of Treacher Collins Syndrome. It is worthy that the correct etiological diagnosis was significantly delayed due to the initial
misperception that the observed malformation syndrome
was a result of drug teratogenicity.
Conclusions
This case highlights the importance of seeking pharmacovigilance advice if any adverse event occurs following medication use. Furthermore, requesting a genetic
consultation to establish a confirmed etiological diagnosis
for any malformation syndrome can significantly reduce
the protracted social and psychological suffering that patients and their families may endure.
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