Long-read DNA and RNA sequencing reveal an intronic retrotransposon insertion in TCOF1 causing Treacher Collins syndrome
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Treacher Collins syndrome (TCS) is a craniofacial genetic disorder caused by loss of function variants in TCOF1, POLR1B, POLR1C or POLR1D. Here we describe two previously undiagnosed paternal half-siblings affected with clinical TCS, and their apparently unaff... ...