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Abnormally folded helix

MedGen UID:
373485
Concept ID:
C1970777
Finding
HPO: HP:0008544

Definition

Any structural anomaly of the border of the helix, which usually forms a rolled rim but is highly variable in shape. [from HPO]

Conditions with this feature

X-linked intellectual disability with marfanoid habitus
MedGen UID:
167096
Concept ID:
C0796022
Disease or Syndrome
MED12-related disorders include the phenotypes of FG syndrome type 1 (FGS1), Lujan syndrome (LS), X-linked Ohdo syndrome (XLOS), Hardikar syndrome (HS), and nonspecific intellectual disability (NSID). FGS1 and LS share the clinical findings of cognitive impairment, hypotonia, and abnormalities of the corpus callosum. FGS1 is further characterized by absolute or relative macrocephaly, tall forehead, downslanted palpebral fissures, small and simple ears, constipation and/or anal anomalies, broad thumbs and halluces, and characteristic behavior. LS is further characterized by large head, tall thin body habitus, long thin face, prominent nasal bridge, high narrow palate, and short philtrum. Carrier females in families with FGS1 and LS are typically unaffected. XLOS is characterized by intellectual disability, blepharophimosis, and facial coarsening. HS has been described in females with cleft lip and/or cleft palate, biliary and liver anomalies, intestinal malrotation, pigmentary retinopathy, and coarctation of the aorta. Developmental and cognitive concerns have not been reported in females with HS. Pathogenic variants in MED12 have been reported in an increasing number of males and females with NSID, with affected individuals often having clinical features identified in other MED12-related disorders.

Recent clinical studies

Etiology

Ghosh U, Tse E, Yang H, Shi M, Caro CD, Wang F, Merz GE, Prusiner SB, Southworth DR, Condello C
Acta Neuropathol Commun 2024 Jun 12;12(1):94. doi: 10.1186/s40478-024-01806-y. PMID: 38867338Free PMC Article
Rogers JT, Xia N, Wong A, Bakshi R, Cahill CM
Int J Mol Sci 2019 Feb 25;20(4) doi: 10.3390/ijms20040994. PMID: 30823541Free PMC Article
Forlino A, Marini JC
Lancet 2016 Apr 16;387(10028):1657-71. Epub 2015 Nov 3 doi: 10.1016/S0140-6736(15)00728-X. PMID: 26542481Free PMC Article
Ashraf GM, Greig NH, Khan TA, Hassan I, Tabrez S, Shakil S, Sheikh IA, Zaidi SK, Akram M, Jabir NR, Firoz CK, Naeem A, Alhazza IM, Damanhouri GA, Kamal MA
CNS Neurol Disord Drug Targets 2014;13(7):1280-93. doi: 10.2174/1871527313666140917095514. PMID: 25230234Free PMC Article
Miller WL
Biochim Biophys Acta 2007 Jun;1771(6):663-76. Epub 2007 Mar 6 doi: 10.1016/j.bbalip.2007.02.012. PMID: 17433772

Diagnosis

Wang D, Pan B, Lin L, Yang Q, He L, Song Y, Zhou J, Jiang H
Medicine (Baltimore) 2018 Nov;97(45):e12997. doi: 10.1097/MD.0000000000012997. PMID: 30407288Free PMC Article
Forlino A, Marini JC
Lancet 2016 Apr 16;387(10028):1657-71. Epub 2015 Nov 3 doi: 10.1016/S0140-6736(15)00728-X. PMID: 26542481Free PMC Article
Garcia MA, Ramonet M, Ciocca M, Cabrera H, Lapunzina P, Alvarez E, de Davila MT
Pediatr Dermatol 2005 Jan-Feb;22(1):11-4. doi: 10.1111/j.1525-1470.2005.22102.x. PMID: 15660889
Armendares S, Salamanca F, Nava S, Ramirez S, Cantu JM
Ann Genet 1975 Jun;18(2):89-94. PMID: 1081370
Zackai EH, Mellman WJ, Neiderer B, Hanson JW
J Pediatr 1975 Aug;87(2):280-4. doi: 10.1016/s0022-3476(75)80603-2. PMID: 50427

Therapy

Rogers JT, Xia N, Wong A, Bakshi R, Cahill CM
Int J Mol Sci 2019 Feb 25;20(4) doi: 10.3390/ijms20040994. PMID: 30823541Free PMC Article
Forlino A, Marini JC
Lancet 2016 Apr 16;387(10028):1657-71. Epub 2015 Nov 3 doi: 10.1016/S0140-6736(15)00728-X. PMID: 26542481Free PMC Article
Mager PP, Penke B, Walter R, Harkany T, Härtignny W
Curr Med Chem 2002 Oct;9(19):1763-80. doi: 10.2174/0929867023369169. PMID: 12369886
Adamson PA, Strecker HD
Facial Plast Surg 1995 Oct;11(4):284-300. doi: 10.1055/s-2008-1064545. PMID: 9046617
Zackai EH, Mellman WJ, Neiderer B, Hanson JW
J Pediatr 1975 Aug;87(2):280-4. doi: 10.1016/s0022-3476(75)80603-2. PMID: 50427

Prognosis

Colcombet-Cazenave B, Druart K, Bonnet C, Petit C, Spérandio O, Guglielmini J, Wolff N
BMC Bioinformatics 2021 Apr 14;22(1):190. doi: 10.1186/s12859-021-04116-5. PMID: 33853521Free PMC Article
Rogers JT, Xia N, Wong A, Bakshi R, Cahill CM
Int J Mol Sci 2019 Feb 25;20(4) doi: 10.3390/ijms20040994. PMID: 30823541Free PMC Article
Wang D, Pan B, Lin L, Yang Q, He L, Song Y, Zhou J, Jiang H
Medicine (Baltimore) 2018 Nov;97(45):e12997. doi: 10.1097/MD.0000000000012997. PMID: 30407288Free PMC Article
Beisswenger M, Cabrele C
Biochim Biophys Acta 2014 Sep;1844(9):1675-83. Epub 2014 Jun 27 doi: 10.1016/j.bbapap.2014.06.015. PMID: 24981796
Adamson PA, Strecker HD
Facial Plast Surg 1995 Oct;11(4):284-300. doi: 10.1055/s-2008-1064545. PMID: 9046617

Clinical prediction guides

Chkioua L, Amri Y, Saheli C, Mili W, Mabrouk S, Chabchoub I, Boudabous H, Azzouz WB, Turkia HB, Ferchichi S, Tebib N, Massoud T, Ghorbel M, Laradi S
Diagn Pathol 2022 May 6;17(1):44. doi: 10.1186/s13000-022-01221-8. PMID: 35524314Free PMC Article
Colcombet-Cazenave B, Druart K, Bonnet C, Petit C, Spérandio O, Guglielmini J, Wolff N
BMC Bioinformatics 2021 Apr 14;22(1):190. doi: 10.1186/s12859-021-04116-5. PMID: 33853521Free PMC Article
Rogers JT, Xia N, Wong A, Bakshi R, Cahill CM
Int J Mol Sci 2019 Feb 25;20(4) doi: 10.3390/ijms20040994. PMID: 30823541Free PMC Article
Beisswenger M, Cabrele C
Biochim Biophys Acta 2014 Sep;1844(9):1675-83. Epub 2014 Jun 27 doi: 10.1016/j.bbapap.2014.06.015. PMID: 24981796
Grothe HL, Little MR, Cho AS, Huang AJ, Yuan C
Mol Vis 2009 Dec 8;15:2617-26. PMID: 20011632Free PMC Article

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