Summative Diagnosis:
Mutant Type 1:
Cardiovascular phenotypes: Mesocardia, double outlet right ventricle (DORV)/overriding aorta, ventricular septal defects (VSDs), atrioventricular septal defect (AVSD), persistent truncus arteriosus (PTA), hypoplastic pulmonary artery (PA), and aortic arch anomalies including interrupted aortic arch (IAA), right aortic arch (RAA), and aberrant right subclavian artery forming incomplete vascular ring.

Noncardiovascular phenotype: Exencephaly, syndactyly, runted, curly tail, single/hypoplastic thymus, low-set ears, left lung isomerism, kidney cysts and tubular dilation, kidney agenesis, and eye defects such as anophthalmia and microphthalmia.


Mutant Type 2:
Cardiovascular phenotypes: Overriding aorta/Double outlet right ventricle (DORV) with ventricular septal defects (subaortic, perimembranous, and muscular), atrioventricular septal defects (AVSD), and biventricular hypertrophy.

Noncardiovascular phenotype: Abnormal flexure of the hindlimbs, hydrops, midline fusion defect of the sternal vertebra, hypoplastic thymus, short snout, and cleft palate.

Fyler Codes
The Fyler code developed by The Boston Children's Heart Foundation in Boston Children's Hospital provides a hierarchical clinical diagnosis of congenital cardiovascular defects and other disorders. These codes are used to delineate pathology in the mutant mouse models that parallel human disease and can be cross referenced to the International Pediatric and Congenital Cardiac Code (IPCCC) (http://www.ipccc.net/).

Fyler Codes	Code Description
1050	Tetralogy of Fallot
1300	Ventricular septal defect
1610	Pulmonary stenosis
2731	Aberrant right subclavian artery
2760	Vascular ring
4170	Hand and/or foot anomaly
4174	Syndactyly
4239	Left bronchial isomerism
4503	Agenesis of kidneys
4864	Anophthalmia
4877	Microphthalmia
4906	Non-cardiac abnormality
4907	Non-cardiac thoracic abnormality
600	Double outlet right ventricle