Endocrinologia, diabetes y nutricion · 2020
Celiac disease screening in children and adolescents with type1 diabetes mellitus: What test should be performed?
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Roldán Martín M Belén, Márquez Romero Corina, Guerra Vilches Enrique, Ruiz Usabiaga Juan, Barrio Castellanos Raquel, Martín Frías María, Plaza Oliver David, Camarero Salces Cristina
Аннотация
INTRODUCTION: Children and adolescents with type1 diabetes mellitus (T1DM) are at high risk for the development of celiac disease (CD) because of the common genetic characteristics of both conditions. The study objectives were to investigate the frequency of the human leukocyte antigen system (HLA) for CD in pediatric T1DM patients and to determine whether HLA testing is suitable for CD screening in that population and is cost-effective as compared to serological screening for CD.
PATIENTS AND METHODS: A retrospective, descriptive study was conducted in 296 patients (148 girls; 148 boys) with T1DM aged <18years who attended a hospital in Madrid. Data on the frequency of genotypes DQ2/DQ8 in a subgroup of 92 patients and the additional cost of performing HLA typing for screening CD were collected. Only when the risk HLA haplotype (DQ2/DQ8) is negative no further serological screening for CD is required.
RESULTS: Twenty-three patients with T1DM (7.77%) also had CD. Alleles DQ2 or DQ8 were found in 91.3% of patients in whom the HLA haplotype was studied. Thus, only 8.7% with a negative haplotype would have benefited from HLA testing. The additional cost of HLA typing was €105.2 for each patient with positive DQ2 or DQ8 in our population.
CONCLUSIONS: HLA typing is not a cost-effective screening method for CD in T1DM because of the frequent association of T1DM with risk genotypes for CD.
PATIENTS AND METHODS: A retrospective, descriptive study was conducted in 296 patients (148 girls; 148 boys) with T1DM aged <18years who attended a hospital in Madrid. Data on the frequency of genotypes DQ2/DQ8 in a subgroup of 92 patients and the additional cost of performing HLA typing for screening CD were collected. Only when the risk HLA haplotype (DQ2/DQ8) is negative no further serological screening for CD is required.
RESULTS: Twenty-three patients with T1DM (7.77%) also had CD. Alleles DQ2 or DQ8 were found in 91.3% of patients in whom the HLA haplotype was studied. Thus, only 8.7% with a negative haplotype would have benefited from HLA testing. The additional cost of HLA typing was €105.2 for each patient with positive DQ2 or DQ8 in our population.
CONCLUSIONS: HLA typing is not a cost-effective screening method for CD in T1DM because of the frequent association of T1DM with risk genotypes for CD.