e/First arch syndrome

Information
has gloss	eng: First arch syndromes are congenital defects caused by a failure of neural crest cells to migrate into the first pharyngeal arch. They can produce facial anomalies. Examples of first arch syndromes include Treacher Collins syndrome and Pierre Robin syndrome.
lexicalization	eng: First arch syndrome
instance of	(noun) a defect that is present at birth congenital defect, congenital anomaly, congenital abnormality, congenital disorder, birth defect