
RING CHROMOSOME 22: A REVIEW OF THE LITERATURE
AND FIRST REPORT FROM INDIA Mahajan S, Kaur A, Singh JR *Corresponding Author: Dr. Anupam Kaur, Department of Human Genetics, Guru Nanak Dev University,
Grand Trunk Road, Amritsar, Punjab, 143005, India; Tel.: +91-183-225-8802, Ext. 3447; Cell: +987-223-9393;
Fax: +91-183-225-8863, 225-8820; E-mail: anupamkaur@yahoo.com page: 55
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CASE REPORT
The proband, a 5-year-old male with microcephaly
and intellectual disability, was referred to
the Centre for Genetic Disorders, Guru Nanak Dev
University, Amritsar, Punjab, India, for cytogenetic
investigations. He was born to healthy, non consanguineous
parents aged 32 (mother) and 35 (father)
years old, respectively. His older sister (9 years old)
was normal. The pregnancy, delivery and neonatal
period were uneventful. The mother had one spontaneous
abortion and one of her pregnancies was
terminated as the fetal heart was absent. The present
subject presented delayed milestones with microcephaly.
On examination, his head circumference
was found to be 46 cm (normal 52.1 cm). Physical
features included brachycephalic head, fl at face,
pointed chin, almond shaped eyes, long eye lashes
and epicanthal folds (Figure 1a). His ears were
placed higher than the normal position and syndactyly
of the second and third toes of right foot was
present. He had hypotonia, absence of speech and
only started walking at the age of 3 years. Autistic
behavior and aggressive nature was also noted. A magnetic resonance imaging (MRI) and urine test
for metabolic screening revealed no abnormality.
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