Elevated body temperature, weakness, signs associated with heart disease, ataxia and death.
Skeletal muscle, heart, central nervous system degeneration, abnormal glycogen accumulation in tissues, and elevated body temperature. Cats with this disease have a shortened life expectancy and generally live about four years.
Fyfe JC, Kurzhals RL, Hawkins MG, Wang P, Yuhki N, Giger U, Van Winkle TJ, Haskins ME, Patterson DF, Henthorn PS. A complex rearrangement in GBE1 causes both perinatal hypoglycemic collapse and late-juvenile-onset neuromuscular degeneration in glycogen storage disease type IV of Norwegian forest cats. Mol Genet Metab. 2007 Apr;90(4):383-92. doi: 10.1016/j.ymgme.2006.12.003. Epub 2007 Jan 25. Erratum in: Mol Genet Metab. 2011 Nov;104(3):423. PMID: 17257876; PMCID: PMC2063609.
Fyfe JC, Giger U, Van Winkle TJ, Haskins ME, Steinberg SA, Wang P, Patterson DF. Glycogen storage disease type IV: inherited deficiency of branching enzyme activity in cats. Pediatr Res. 1992 Dec;32(6):719-25. doi: 10.1203/00006450-199212000-00020. PMID: 1337588.