To assess whether the p.His293Leufs variant is associated with MODY in Finnish patients, we genotyped the RFX6 p.His293Leufs variant in 80 Finnish probands who were routinely referred for MODY genetic testing to Genome Center of Eastern Finland, University of Eastern Finland and did not have mutations in the most common MODY genes (GCK, HNF1A, HNF4A and HNF1B) (Supplementary Table 1). Here, GCK is linked to MODY.