Search 1: lipodystrophy and lymphoma(((((((((lipodystrophy AND lymphoma) OR (lipoatrophy AND lymphoma)) OR (recombinant leptin AND lymphoma)) OR (metreleptin AND lymphoma)) OR (metreleptin AND cancer)) OR (leptin replacement AND lymphoma)) OR (leptin replacement AND cancer)) NOT (mouse)) NOT (rat)) NOT (review[Publication Type])Search 2: CLD and lymphoma((congenital leptin deficiency) AND (lymphoma)) OR ((leptin deficiency AND lymphoma)). This evidence concerns the gene LEP and cancer.