Depending on the length of the deleted segment, additional features may include small mouth, large ears, finger abnormalities, limited joint movement, failure to thrive, congenital heart defects, and other anomalies.
Longer deletions are more likely to develop life-threatening malformations shorter ones.
9q34 is sometimes considered as a separate entity which is characterized by slight psychomotor retardation, limited speech capacity, hyperactivity, feeding difficulty, failure to thrive, joint contractures, finger abnormalities, erythema, heart murmur, blepharoptosis, strabismus, dolichocephaly, facial asymmetry, narrow palpebral fissures, microphthalmia, and downturned corners of the mouth. Narrow palpebral fissures, blepharoptosis, deeply-set eyes, microphthalmia, strabismus, and occasional ectopia lentis. Long narrow beaked nose with narrow bridge. Arachnodactyly, abnormal implantation of fingers, and excessive digital creases. Scoliosis and kyphosis.