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Beckwith-Weidemann syndrome with IC2 (KvDMR1) hypomethylation defect: a novel mutation. The Beckwith-Wiedemann syndrome (BWS) is a rare genetic syndrome. However, this is one of the most common overgrowth syndromes. This is a genetically and clinically heterogeneous syndrome. Here, we report a case of Beckwith-Weidemann syndrome without macrosomia, visceromegaly and hemihyperplasia but having macroglossia, omphalocele and anterior linear ear lobe creases. The diagnosis was confirmed by gene analysis suggestive of imprinting centre 2 (KvDMR1) hypomethylation defect.