Three patients reported side effects during treatment with sulfonylureas. One patient had mild transitory diarrhea on glyburide, which has been previously reported (15), but when transferred to tolbutamide, another sulfonylurea, no further side effects were experienced. Another patient had morning nausea while on glyburide, which may have been a side effect of the sulfonylurea therapy but resolved without discontinuing treatment. Transitory nausea has been previously reported in patients on glyburide (18). One severe hypoglycemic episode (grade three in the International Society of Pediatric and Adolescent Diabetes 2000 consensus guidelines) was reported in a patient, requiring a reduction in dosage of sulfonylureas. This patient also experienced abdominal discomfort, which started before the transfer but may have worsened during treatment with glyburide. No other severe hypoglycemic episodes were reported before or after the transfer onto sulfonylureas in any patients, and no other side effects were reported.
Comparison with patients with Kit6.2 mutations who successfully transferred to sulfonylureas