The frequency of chromosomal aberrations in peripheral blood lymphocyt
es was assessed in three groups of children: untreated coeliac disease
(n = 20); non-coeliac disease enteropathies (n=15); controls (n = 15)
. The mean frequency of aberrant cells and the total number of aberrat
ions per 100 metaphases was increased in the coeliac disease group com
pared with controls by factors of 5 and 6, respectively (p < 0.01 for
both). Aberrant cells and total aberrations were similarly increased i
n the non-coeliac disease enteropathy group by a factor of 3.7 in each
case (p < 0.05). However, the frequency of aberrations in the two ent
eropathy groups was not significantly different. Children with coeliac
disease, similar to affected adults, have evidence of increased chrom
osomal instability. However, similarly increased chromosomal aberratio
ns are seen in children with non-coeliac disease enteropathies, indica
ting that the abnormality is not specific for coeliac disease.