Brief clinical report: HARD (+/- E) syndrome: report of a sixth family with support for autosomal-recessive inheritance.

We report on two sibs with hydrocephalus, encephalocele, agyria and ocular anomalies, an association known as the HARD +/- E syndrome. This is thought to be the sixth reported family and third instance of familial occurrence of this autosomal-recessive syndrome which deserves consideration in the nosology of every case of neural tube defect (hydrocephalus).