P640: Reevaluating the standard approach to genomic testing in infants: Targeted genomic testing vs exome/genome sequencing as a first-tier test - Sara Reichert; Emma Bedoukian; K. Taylor Wild; Jennifer Lent; Elizabeth A. Fanning; Alexandra Heck; Ramakrishnan Rajagopalan; Laura Conlin; Nancy Spinner; Matthew Dulik (Genetics in Medicine Open)