<unk>  is caused by a deletion of part of chromosome<unk> , from p13.3 (a band on the short end of the chromosome) to the end of the chromosome. These can either be due to a balanced translocation or a de novo deletion. The genes affected include hemoglobin, alpha 1 (HBA1) and hemoglobin, alpha 2 (HBA2).
ATR-16 syndrome
ATR-X syndrome
MEDNIK syndrome
ZTTK syndrome
Treacher Collins syndrome
LIG4 syndrome
CAMFAK syndrome
Smith Martin Dodd syndrome