HTT and juvenile Huntington disease: Kordasiewicz Kordasiewicz HB HB Stanek Stanek LM LM Wancewicz Wancewicz EV EV Sustained therapeutic reversal of Huntington’s disease by transient repression of huntingtin synthesis Sustained therapeutic reversal of Huntington’s disease by transient repression of huntingtin synthesis Neuron Neuron 2012 2012 74 74 1031 1031 1044 1044 supplied-pmid 22726834?