LMNA-related congenital muscular dystrophy
Last updated 18 Aug 2020
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LMNA-related congenital muscular dystrophy (L-CMD) is a condition that primarily affects muscles used for movement (skeletal muscles). It is part of a group of genetic conditions called congenital muscular dystrophies, which cause weak muscle tone (hypotonia) and muscle wasting (atrophy) beginning very early in life.
Description
LMNA-related congenital muscular dystrophy (L-CMD) is a condition that primarily affects muscles used for movement (skeletal muscles). It is part of a group of genetic conditions called congenital muscular dystrophies, which cause weak muscle tone (hypotonia) and muscle wasting (atrophy) beginning very early in life.
In people with L-CMD, muscle weakness becomes apparent in infancy or early childhood and can worsen quickly. The most severely affected infants develop few motor skills, and they are never able to hold up their heads, roll over, or sit. Less severely affected children may learn to sit, stand, and walk before muscle weakness becomes apparent. First the neck muscles weaken, causing the head to fall forward (dropped-head syndrome). As other skeletal muscles become weaker, these children may ultimately lose the ability to sit, stand, and walk unassisted.
Other features of L-CMD often include spinal rigidity and abnormal curvature of the spine (scoliosis and lordosis); joint deformities (contractures) that restrict movement, particularly in the hips and legs; and an inward-turning foot. People with L-CMD also have an increased risk of heart rhythm abnormalities (arrhythmias).
Over time, muscle weakness causes most infants and children with L-CMD to have trouble eating and breathing. The breathing problems result from restrictive respiratory insufficiency, which occurs when muscles in the chest are weakened and the ribcage becomes increasingly rigid. This problem can be life-threatening, and many affected children require support with a machine to help them breathe (mechanical ventilation).
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal dominant. More than one pattern can apply in different cases.
Related genes
Other names
L-CMD
LMNA-related CMD
MDCL
Muscular dystrophy, congenital, LMNA-related
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Further reading and references
- LMNA-related congenital muscular dystrophy; MedlinePlus, National Library of Medicine.
- Azibani F, Brull A, Arandel L, Beuvin M, Nelson I, Jollet A, Ziat E, Prudhon B, Benkhelifa-Ziyyat S, Bitoun M, Lorain S, Bonne G, Bertrand AT. Gene Therapy via Trans-Splicing for LMNA-Related Congenital Muscular Dystrophy. Mol Ther Nucleic Acids. 2018 Mar 2;10:376-386. doi: 10.1016/j.omtn.2017.12.012. Epub 2017 Dec 30.
- Barateau A, Vadrot N, Vicart P, Ferreiro A, Mayer M, Heron D, Vigouroux C, Buendia B. A Novel Lamin A Mutant Responsible for Congenital Muscular Dystrophy Causes Distinct Abnormalities of the Cell Nucleus. PLoS One. 2017 Jan 26;12(1):e0169189. doi: 10.1371/journal.pone.0169189. eCollection 2017.
- Bonati U, Bechtel N, Heinimann K, Rutz E, Schneider J, Frank S, Weber P, Fischer D. Congenital muscular dystrophy with dropped head phenotype and cognitive impairment due to a novel mutation in the LMNA gene. Neuromuscul Disord. 2014 Jun;24(6):529-32. doi: 10.1016/j.nmd.2014.02.004. Epub 2014 Feb 15.
- D'Amico A, Haliloglu G, Richard P, Talim B, Maugenre S, Ferreiro A, Guicheney P, Menditto I, Benedetti S, Bertini E, Bonne G, Topaloglu H. Two patients with 'Dropped head syndrome' due to mutations in LMNA or SEPN1 genes. Neuromuscul Disord. 2005 Aug;15(8):521-4. doi: 10.1016/j.nmd.2005.03.006.
- Hattori A, Komaki H, Kawatani M, Sakuma H, Saito Y, Nakagawa E, Sugai K, Sasaki M, Hayashi YK, Nonaka I, Nishino I. A novel mutation in the LMNA gene causes congenital muscular dystrophy with dropped head and brain involvement. Neuromuscul Disord. 2012 Feb;22(2):149-51. doi: 10.1016/j.nmd.2011.08.009. Epub 2012 Jan 11.
- Heller F, Dabaj I, Mah JK, Bergounioux J, Essid A, Bonnemann CG, Rutkowski A, Bonne G, Quijano-Roy S, Wahbi K. Cardiac manifestations of congenital LMNA-related muscular dystrophy in children: three case reports and recommendations for care. Cardiol Young. 2017 Aug;27(6):1076-1082. doi: 10.1017/S1047951116002079. Epub 2016 Dec 12.
- Karaoglu P, Quizon N, Pergande M, Wang H, Polat AI, Ersen A, Ozer E, Willkomm L, Hiz Kurul S, Heredia R, Yis U, Selcen D, Cirak S. Dropped head congenital muscular dystrophy caused by de novo mutations in LMNA. Brain Dev. 2017 Apr;39(4):361-364. doi: 10.1016/j.braindev.2016.11.002. Epub 2016 Nov 19.
- Menezes MP, Waddell LB, Evesson FJ, Cooper S, Webster R, Jones K, Mowat D, Kiernan MC, Johnston HM, Corbett A, Harbord M, North KN, Clarke NF. Importance and challenge of making an early diagnosis in LMNA-related muscular dystrophy. Neurology. 2012 Apr 17;78(16):1258-63. doi: 10.1212/WNL.0b013e318250d839. Epub 2012 Apr 4.
- Pasqualin LM, Reed UC, Costa TV, Quedas E, Albuquerque MA, Resende MB, Rutkowski A, Chadi G, Zanoteli E. Congenital muscular dystrophy with dropped head linked to the LMNA gene in a Brazilian cohort. Pediatr Neurol. 2014 Apr;50(4):400-6. doi: 10.1016/j.pediatrneurol.2013.11.010. Epub 2013 Nov 21.
- Prigogine C, Richard P, Van den Bergh P, Groswasser J, Deconinck N. Novel LMNA mutation presenting as severe congenital muscular dystrophy. Pediatr Neurol. 2010 Oct;43(4):283-6. doi: 10.1016/j.pediatrneurol.2010.05.016.
- Quijano-Roy S, Mbieleu B, Bonnemann CG, Jeannet PY, Colomer J, Clarke NF, Cuisset JM, Roper H, De Meirleir L, D'Amico A, Ben Yaou R, Nascimento A, Barois A, Demay L, Bertini E, Ferreiro A, Sewry CA, Romero NB, Ryan M, Muntoni F, Guicheney P, Richard P, Bonne G, Estournet B. De novo LMNA mutations cause a new form of congenital muscular dystrophy. Ann Neurol. 2008 Aug;64(2):177-86. doi: 10.1002/ana.21417.
- Wang CH, Bonnemann CG, Rutkowski A, Sejersen T, Bellini J, Battista V, Florence JM, Schara U, Schuler PM, Wahbi K, Aloysius A, Bash RO, Beroud C, Bertini E, Bushby K, Cohn RD, Connolly AM, Deconinck N, Desguerre I, Eagle M, Estournet-Mathiaud B, Ferreiro A, Fujak A, Goemans N, Iannaccone ST, Jouinot P, Main M, Melacini P, Mueller-Felber W, Muntoni F, Nelson LL, Rahbek J, Quijano-Roy S, Sewry C, Storhaug K, Simonds A, Tseng B, Vajsar J, Vianello A, Zeller R; International Standard of Care Committee for Congenital Muscular Dystrophy. Consensus statement on standard of care for congenital muscular dystrophies. J Child Neurol. 2010 Dec;25(12):1559-81. doi: 10.1177/0883073810381924. Epub 2010 Nov 15.
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