Interstitial deletion in the long arms of chromosome 1: 46,XY,del(1)(pter leads to q22::q25 leads to qter).

A child was brought to us with multiple anomalies. On examination we found an interstitial deletion in the long arms of chromosome 1. We studied genetic and chromosome markers, comparing our clinical and cytogenetic findings with other reported cases of chromosome 1 interstitial deletion.