MOMO syndrome | |
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Other names | Macrosomia-obesity-macrocephaly-ocular abnormalities syndrome, Macrocephaly-obesity-mental disability-ocular abnormalities syndrome |
Specialty | Genetics |
MOMO syndrome is an extremely rare genetic disorder which belongs to the overgrowth syndromes and has been diagnosed in only seven cases around the world, and occurs in 1 in 100 million births. The name is an acronym of the four primary aspects of the disorder: Macrosomia (excessive birth weight), Obesity, Macrocephaly (excessive head size) and Ocular abnormalities. It is unknown if it is a life-limiting condition. MOMO syndrome was first diagnosed in 1993 [1] by Professor Danilo Moretti-Ferreira, a Brazilian researcher in the Genetic and Clinical Studies of neurodevelopmental disorders.
This syndrome's acronym is an intended pun. It refers to the traditionally tall and obese king of Carnivals, Momus—Rei Momo in Portuguese.[ citation needed ]
Along with the four aspects of the disorder that give it its name, there are also other common symptoms:[ citation needed ]
The ocular abnormalities are generally retinal coloboma and nystagmus.[ citation needed ]
Because MOMO is such a rare disorder, very few studies have been conducted into its causes. Current research suggests that it is linked to a de novo (new) autosomal dominant mutation. [2]
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Archie Thompson was born in 2002 in Icklesham, England and weighed 8 lbs 4 oz (3740 g). By 15 months his weight had increased to 4 stone (56 lbs; 25 kg) and by 24 months it was up to 6 stone (84 lbs; 38 kg). The condition placed a large strain on his heart and lungs. The Thompson family were featured in a documentary for Five first shown on 3 October 2004. It has since aired on Discovery Fit & Health in the United States.[ citation needed ]
Danielle Falan, from São Paulo, Brazil, is one of the oldest surviving people with MOMO syndrome. At age 17 she was featured in the Archie Thompson documentary as her mother traveled to visit her in Brazil. Falan attended school as normal, and hopes to attend college.[ citation needed ]
Six other cases have been diagnosed, in Italy, [3] in Brazil ,[ unreliable source? ] two in Germany, [ citation needed ], in Cuba, 2018 Diorkeblin Hernández Durruthy [ unreliable source? ] [ unreliable source? ], and in Poland. [4] An additional case was reported in 2010. [5]
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Simpson–Golabi–Behmel syndrome (SGBS) is a rare inherited congenital disorder that can cause craniofacial, skeletal, vascular, cardiac, and renal abnormalities. There is a high prevalence of cancer associated in those with SGBS which includes wilms tumors, neuroblastoma, tumors of the adrenal gland, liver, lungs and abdominal organs. The syndrome is inherited in an X-linked recessive manner. Females that possess one copy of the mutation are considered to be carriers of the syndrome but may still express varying degrees of the phenotype, suffering mild to severe malady. Males experience a higher likelihood of fetal death.
Greig cephalopolysyndactyly syndrome is a disorder that affects development of the limbs, head, and face. The features of this syndrome are highly variable, ranging from very mild to severe. People with this condition typically have one or more extra fingers or toes (polydactyly) or an abnormally wide thumb or big toe (hallux).
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Muenke syndrome, also known as FGFR3-related craniosynostosis, is a human specific condition characterized by the premature closure of certain bones of the skull during development, which affects the shape of the head and face. First described by Maximilian Muenke, the syndrome occurs in about 1 in 30,000 newborns. This condition accounts for an estimated 8 percent of all cases of craniosynostosis.
Weaver syndrome is an extremely rare autosomal dominant genetic disorder associated with rapid growth beginning in the prenatal period and continuing through the toddler and youth years. It is characterized by advanced osseous maturation and distinctive craniofacial, skeletal and neurological abnormalities. It is similar to Sotos syndrome and is classified as an overgrowth syndrome.
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