Table 1.

Data of patients with raised antibody titers against endomysium (EMA‐Abs) or gliadin (AGA–Abs) and of patients with an earlier diagnosed celiac disease

Case	IgA‐EMA	IgA‐AGA	IgA‐tTG	Gastroint. symptoms	Duodenal biopsy	Celiac disease	Bohan and Peter or Griggs
1	1:160	Neg	—a	Yes	Positiveb	Definite	Definite IIM overlap
2	Neg	>200	—	No	Normal	No	Probable IIM overlap
3	Neg	42	—	No	Normal	No	Not IIM
4	Neg	43	Neg	No	—	No	Definite IBM
5	Neg	Neg	—	Yes	Positive	Definite	Definite IBM
6	1:40	Neg	Neg	No	Normal	No	Probable IIM overlap
7	1:80	Neg	—	Yes	—	Probable	Possible Polymyositis
8	Neg	45	Neg	No	—	No	Possible Polymyositis
9	Neg	Neg	—	Yes	Positive	Definite	Definite IBM
10	Neg	42	—	No	Normal	No	Probable IIM overlap
11	Neg	>200	Neg	No	—	No	Possible Polymyositis
12	Neg	>200	Neg	No	—	No	Not IIM
13	Neg	Neg	—	Yes	Positive	Definite	Definite IBM

^a — = not performed. ^bPositive = biopsy findings consistent with celiac disease.

IgA‐tTG, antitissue transglutaminase antibodies, Neg, not elevated antibodies.