Protein sy'n cael ei godio yn y corff dynol gan y genyn MC4R yw MC4R a elwir hefyd yn Melanocortin 4 receptor (Saesneg). Segment o DNA yw'r genyn, sy'n amgodio ffwythiant arbennig. Mae'r genyn yma wedi ei leoli ar yr edefyn ôl o gromosom dynol 18, band 18q21.32.[2]
- "Rs12970134 near MC4R is associated with appetite and beverage intake in overweight and obese children: A family-based association study in Chinese population. ". PLoS One. 2017. PMID 28520814.
- "Searching for the relationship between the parameters of metabolic syndrome and the rs17782313 (T>C) polymorphism of the MC4Rgene in postmenopausal women. ". Clin Interv Aging. 2017. PMID 28356726.
- "Physical Activity and Sedentary Behaviors Modify the Association between Melanocortin 4 Receptor Gene Variant and Obesity in Chinese Children and Adolescents. ". PLoS One. 2017. PMID 28081251.
- "Association of the melanocortin 4 receptor gene rs17782313 polymorphism with rewarding value of food and eating behavior in Chilean children. ". J Physiol Biochem. 2017. PMID 27730429.
- "A Common Variant and the Transcript Levels of MC4R Gene Are Associated With Adiposity in Children: The IDEFICS Study.". J Clin Endocrinol Metab. 2016. PMID 27583473.