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I just received this message from Medscape regarding new indicators for
first degree relatives.  If you are interested, see the following.
http://gastroenterology.medscape.com/14952.rhtml

SEROLOGIC, GENETIC MARKERS IDENTIFY CELIAC DISEASE IN FIRST-DEGREE
RELATIVES OF PATIENTS

Both serologic markers and the human lymphocyte antigen class II extended
DQ2 (HLA-DQ2) haplotype are useful markers for screening first-degree
relatives of patients with celiac disease for the disorder.
http://gastroenterology.medscape.com/14952.rhtml