 A group of genes ("MPPED1", "CYB5R3", "FBLN1", "NUP50", "C22ORF9", "KIAA1644", "PARVB", TRMU, "WNT7B" and "ATXN10"), as well as microRNAs may all contribute to loss of language, a feature that varies notably with deletion size.The same study found that macrocephaly seen in 22q13 deletion syndrome patients may be associated with "WNT7B".