????? ??? ??, ?? ??? ??? ??? ? ?? ?? ??????. ???? ???? ??? ? ?? ?? ??? ?????.????? ??? ????? ???? ????.????? ???? ??? ??? ??? ???? ?????.A chromosomal abnormality consisting of your absence of among the list of copies of chromosome seven in somatic cells. [from NCI]???? ???? ?? ?????, ??, ?? ? ??(??)??? ???????.SPG26 can be an autosomal recessive