HMGCLL1 and Prader-Willi syndrome: We note that 6 of the 20 SNORD116-specific mRNAs (ADCYAP1, KLHL14, HMGCLL1, PCDHGB7, ZBTB20, APLNR) were differentially expressed in samples from PWS patients (Bochukova et al. 2018) but not always in the same direction.