Subcutaneous administration, higher age and lower renal function are associated with erythrocyte methotrexate accumulation in Crohn’s disease: a cross-sectional study

Study of Erythrocyte MTX-polyglutamates (MTX-PG1-5) levels in Crohns patients shows that age, lower GFR and subcutaneous #MTX use all significantly increase RBC MTX-polyglutamate levels (all risk factors for MTX toxicity) https://t.co/469eMqbCBC https://t