an X-linked progressive encephalopathy. We have collected the results of MECP2 analysis conducted in four laboratories in France. A total of 301 RTT alleles have been analyzed
- issue: - volume: - pages: and R306C (6.8%). Only 10 mutations had a relative frequency > 2%. A total of 59 mutations were found in a small number of RTT alleles (from 1 to 2). These data demonstrate th.