Application of red cell distribution width to screening for coeliac disease in insulin-dependent diabetes mellitus

Prevalence of Coagulopathy in Patients with Celiac Disease: A Single-Center Retrospective Case-Control Study

Introduction: Despite being one of the most frequent chronic digestive diseases worldwide, with a prevalence of 1%, celiac disease (CD) remains severely underdiagnosed. Among the instruments used to improve its diagnostic rate, hematologic parameters have been proposed as screening tests to select patients with an increased probability of having CD. Assessment of coagulation is included in routine check-ups, and CD has been reported to be associated with coagulopathy. We aimed to assess if subtle changes in coagulation tests could be used in clinical practice to prompt testing for CD. Methods: We retrospectively recruited all patients with clinical suspicion for CD during a study period of 7 years (between 2015 and 2022), who were tested using IgA tissue transglutaminase (tTG) serology and serum total IgA (IgG tTG in case of IgA deficiency) and who underwent upper gastrointestinal endoscopy with multiple biopsy sampling of the duodenal bulb and distal duodenum. We stratified patients into three groups: newly diagnosed CD, gluten-free diet-treated CD, and non-CD controls. Results: Altogether, there were 133 CD patients (71 newly diagnosed, 62 GFD-treated) and 57 non-CD controls. Mean age and gender distribution were similar among the three groups: 43.3 years for newly diagnosed CD, 41.6 years for non-CD controls, and 44 years for GFD-treated CD patients, with a male gender distribution of 21.1%, 28%, and 24.1%, respectively. Among the included newly diagnosed CD patients, 14% had a prolonged INR. The mean INR was slightly higher in newly diagnosed CD patients, compared to GFD-treated CD patients and non-CD controls: 1.12 ± 0.30, 1.02 ± 0.83, and 1.00 ± 0.08, respectively (p = 0.009). Consequently, prothrombin activity was slightly lower in newly diagnosed CD patients, compared to GFD-treated CD and non-CD controls: 94.9 ± 19.3%, 102.3 ± 12.8%, and 101.9 ± 15.15, respectively. Interestingly, after GFD, the mean INR and prothrombin activity of CD individuals reached a value similar to that of non-CD controls. Conclusions: Subtle changes in INR, defined as a value within the normal range, but closer to the upper limit, could be an indicator of probability for CD.

Red cell distribution width as a marker of coeliac disease: a prospective study

BACKGROUND

Coeliac disease is frequently underdiagnosed because of its protean presentations. Serological tests may be helpful in screening programmes for populations at risk, but they are costly.

AIM

To determine prospectively whether a commonly available haematological test such as the red cell distribution width (RDW) could be of help in detecting unrecognized coeliac disease.

METHODS

Of 353 consecutive adult patients referred to our outpatient malabsorption clinic, 198 in whom clinical suspicion was strong were referred for further investigations and intestinal biopsy. Seventy-six inflammatory bowel disease outpatients and 90 subjects admitted for diseases other than malabsorption were enrolled as the control group.

RESULTS

RDW was increased in 94 (47.4%) and normal in 104 (52.5%) of 198 patients. Duodenal biopsy confirmed coeliac disease in 80 (85.1%) of the former patients and 69 (66.3%) of the latter patients. No correlation between RDW values and histological scores was found. Overall RDW increase was found in 80/149 (53.7%) patients with a definite diagnosis of coeliac disease, and in 14/49 (28.6%) patients in whom biopsy excluded the disease. A 1-year gluten withdrawal led to a significant decrease in RDW value, even in patients with obdurate mucosal impairment.

CONCLUSIONS

In patients in whom there is a strong clinical suspicion of coeliac disease, an elevated RDW despite normal haemoglobin concentration may be a reliable predictor of the disease.