ZFP69 and obesity due to melanocortin 4 receptor deficiency: The present data identify the zinc finger domain transcription factor Zfp69 as the most likely candidate for the diabetogenic effect of the mouse QTL Nidd1 and Nidd/SJL which aggravates and accelerates obesity-associated diabetes in the NZO strain, and enhances hyperglycaemia in B6-ob/ob mice.