Fullana et al. [Am J Med Genet (suppl. 2): 23-29, 1986] reported on 2 sibs with an autosomal recessive syndrome of caudal deficiency and polyasplenia anomalies. We report on a similar patient in which agenesis of the corpus callosum (ACC) was also found. Such an association has not been reported previously. This finding of ACC is to be interpreted as another midline anomaly rather than as a causally independent malformation.