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Townes-Brocks syndrome
Background
Townes-Brocks syndrome (TBS) is a rare genetic condition present at birth. The main features include ear anomalies leading to hearing loss and characteristic anal and thumb anomalies. The range and severity of these features vary from person to person. TBS affects males and females equally. Since 1972, when the condition was first described by Dr Townes and Dr Brocks, approximately 100 individuals worldwide have been reported with the syndrome. It is difficult to estimate the true incidence of TBS because there is a possibility that TBS is currently under diagnosed. On this basis, more individuals than reported may be affected with TBS.
