Phocomelia-ectrodactyly-deafness-sinus arrhythmia syndrome is characterized by phocomelia (involving arms more severely), ectrodactyly, ear anomalies (bilateral anomalies of the pinnae), conductive deafness, dysmorphism (long and prominent philtrum, mild maxillary hypoplasia) and sinus arrhythmia. It has been described in four patients (a father and his son and a mother and her daughter) from two unrelated families.