ALDA only evaluates for 27 LGMD subtypes, plus other muscular dystrophies which have overlapping clinical presentations such as Becker/DMD manifesting carriers, FSHD, Pompe, X-linked EDMD, and GNE myopathy.  New genetic types of LGMD continue to be identified but aren’t included or evaluated by ALDA. It is estimated that with current knowledge, about 75% of LGMD patients are able to be diagnosed with a specific type. Even for currently identified types of LGMD a number of case reports in the medical literature describe patients whose phenotypes are atypical, or outside the previously reported spectrum of their particular form of LGMD. The tool may not be able to correctly diagnose patients whose symptoms are unusual or unreported for their type of LGMD.