text: A loss of function mutation in the CACNA1C gene alters the  encoding for the α1- and β2b-subunits of the L-type calcium channel. The phenotype is similar to Brugada syndrome combined with a<unk>  QT interval.  There is an increased risk of sudden cardiac death.
option_0: Short QT syndrome type 4
option_1: Short QT syndrome type 5
option_2: Short QT syndrome type 1
option_3: Short QT syndrome type 2
option_4: Short QT syndrome type 3
option_5: Long QT Syndrome
option_6: Long QT syndrome
option_7: Singh-Williams-McAlister syndrome