<prompt> Answer this question truthfullyTo what is storage disease type VI related?  <response>: <reason> Glycogen storage disease type VI is an autosomal recessive disease and some forms are X-linked recessive. Carrier screening of at-risk relatives may be done. Screening requires prior PYGL identification of variants in the family. Prenatal diagnosis and preimplantation genetic diagnosis PGD for at-risk pregnancies may be done. 