Any otofaciocervical syndrome in which the cause of the disease is a mutation in the PAX1 gene. The disease is otofaciocervical syndrome 2 (MONDO_0014254, a Monarch Disease Ontology identifier). Also known as: PAX1 otofaciocervical syndrome, otofaciocervical syndrome caused by mutation in PAX1, otofaciocervical syndrome type 2.