U.S. flag

An official website of the United States government


Send to:

Choose Destination

Boudin-Mortier syndrome(BOMOS)

MedGen UID:
Concept ID:
Disease or Syndrome
Synonyms: BOMOS; Tall stature and long digits with extra epiphyses
Gene (location): NPR3 (5p13.3)
Monarch Initiative: MONDO:0859194
OMIM®: 619543


Boudin-Mortier syndrome (BOMOS) is characterized by tall stature, arachnodactyly, disproportionately elongated great toes, and multiple extra epiphyses. Some patients also show joint hypermobility and dilation of the aortic root (Boudin et al., 2018). Mutation in the NPR2 gene (108961) results in a similar phenotype of increased stature and elongation of the digits, particularly of the great toes, with multiple extra epiphyses (epiphyseal chondrodysplasia, Miura type; 615923). [from OMIM]

Clinical features

From HPO
MedGen UID:
Concept ID:
Congenital Abnormality
Abnormally long and slender fingers ("spider fingers").
Pes planus
MedGen UID:
Concept ID:
Anatomical Abnormality
A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.
Mallet finger
MedGen UID:
Concept ID:
Acquired Abnormality
Mallet finger refers to a condition in which the end joint of a finger bends but will not straighten by itself. In this situation, the joint can be pushed straight but will not hold that position on its own.
Long thumb
MedGen UID:
Concept ID:
Length of the thumb is greater than normal.
Long fingers
MedGen UID:
Concept ID:
The middle finger is more than 2 SD above the mean for newborns 27 to 41 weeks EGA or above the 97th centile for children from birth to 16 years of age AND the five digits retain their normal length proportions relative to each other (i.e., it is not the case that the middle finger is the only lengthened digit), or, Fingers that appear disproportionately long compared to the palm of the hand.
Long hallux
MedGen UID:
Concept ID:
Increased length of the big toe.
Long toe
MedGen UID:
Concept ID:
Toes that appear disproportionately long compared to the foot.
Pseudoepiphyses of the proximal phalanges of the hand
MedGen UID:
Concept ID:
Anatomical Abnormality
A secondary ossification center in the proximal phalanges of the hand that is distinct from the normal epiphysis that does not contribute to the longitudinal growth of a tubular bone.
Pseudoepiphyses of the middle phalanges of the hand
MedGen UID:
Concept ID:
Anatomical Abnormality
A secondary ossification center in the middle phalanges of the hand that is distinct from the normal epiphysis that does not contribute to the longitudinal growth of a tubular bone.
Pseudoepiphysis of the 1st metacarpal
MedGen UID:
Concept ID:
Anatomical Abnormality
The epiphysis of the first metacarpal is localized at the proximal end of the metacarpal bone although an accessory epiphysis may be located at the distal end of the metacarpal.
MedGen UID:
Concept ID:
Congenital Abnormality
An angulation of a digit at an interphalangeal joint in the plane of the palm (finger) or sole (toe).
Mitral valve prolapse
MedGen UID:
Concept ID:
Disease or Syndrome
One or both of the leaflets (cusps) of the mitral valve bulges back into the left atrium upon contraction of the left ventricle.
Aortic root aneurysm
MedGen UID:
Concept ID:
Anatomical Abnormality
An abnormal localized widening (dilatation) of the aortic root.
Tall stature
MedGen UID:
Concept ID:
A height above that which is expected according to age and gender norms.
Difficulty walking
MedGen UID:
Concept ID:
Reduced ability to walk (ambulate).
Joint hypermobility
MedGen UID:
Concept ID:
The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.
Malar flattening
MedGen UID:
Concept ID:
Underdevelopment of the malar prominence of the jugal bone (zygomatic bone in mammals), appreciated in profile, frontal view, and/or by palpation.
Pectus excavatum
MedGen UID:
Concept ID:
A defect of the chest wall characterized by a depression of the sternum, giving the chest ("pectus") a caved-in ("excavatum") appearance.
Elevated alkaline phosphatase of bone origin
MedGen UID:
Concept ID:
An abnormally increased level of bone isoforms of alkaline phosphatase, tissue-nonspecific isozyme in the blood.
MedGen UID:
Concept ID:
Disease or Syndrome
Nearsightedness, also known as myopia, is an eye condition that causes blurry distance vision. People who are nearsighted have more trouble seeing things that are far away (such as when driving) than things that are close up (such as when reading or using a computer). If it is not treated with corrective lenses or surgery, nearsightedness can lead to squinting, eyestrain, headaches, and significant visual impairment.\n\nNearsightedness usually begins in childhood or adolescence. It tends to worsen with age until adulthood, when it may stop getting worse (stabilize). In some people, nearsightedness improves in later adulthood.\n\nFor normal vision, light passes through the clear cornea at the front of the eye and is focused by the lens onto the surface of the retina, which is the lining of the back of the eye that contains light-sensing cells. People who are nearsighted typically have eyeballs that are too long from front to back. As a result, light entering the eye is focused too far forward, in front of the retina instead of on its surface. It is this change that causes distant objects to appear blurry. The longer the eyeball is, the farther forward light rays will be focused and the more severely nearsighted a person will be.\n\nNearsightedness is measured by how powerful a lens must be to correct it. The standard unit of lens power is called a diopter. Negative (minus) powered lenses are used to correct nearsightedness. The more severe a person's nearsightedness, the larger the number of diopters required for correction. In an individual with nearsightedness, one eye may be more nearsighted than the other.\n\nEye doctors often refer to nearsightedness less than -5 or -6 diopters as "common myopia." Nearsightedness of -6 diopters or more is commonly called "high myopia." This distinction is important because high myopia increases a person's risk of developing other eye problems that can lead to permanent vision loss or blindness. These problems include tearing and detachment of the retina, clouding of the lens (cataract), and an eye disease called glaucoma that is usually related to increased pressure within the eye. The risk of these other eye problems increases with the severity of the nearsightedness. The term "pathological myopia" is used to describe cases in which high myopia leads to tissue damage within the eye.

Professional guidelines


Styne DM, Arslanian SA, Connor EL, Farooqi IS, Murad MH, Silverstein JH, Yanovski JA
J Clin Endocrinol Metab 2017 Mar 1;102(3):709-757. doi: 10.1210/jc.2016-2573. PMID: 28359099Free PMC Article
Spasovski G, Vanholder R, Allolio B, Annane D, Ball S, Bichet D, Decaux G, Fenske W, Hoorn EJ, Ichai C, Joannidis M, Soupart A, Zietse R, Haller M, van der Veer S, Van Biesen W, Nagler E; Hyponatraemia Guideline Development Group
Eur J Endocrinol 2014 Mar;170(3):G1-47. Epub 2014 Feb 25 doi: 10.1530/EJE-13-1020. PMID: 24569125
Miyakis S, Lockshin MD, Atsumi T, Branch DW, Brey RL, Cervera R, Derksen RH, DE Groot PG, Koike T, Meroni PL, Reber G, Shoenfeld Y, Tincani A, Vlachoyiannopoulos PG, Krilis SA
J Thromb Haemost 2006 Feb;4(2):295-306. doi: 10.1111/j.1538-7836.2006.01753.x. PMID: 16420554

Recent clinical studies


Varagur K, Sanka SA, Strahle JM
Neurosurg Clin N Am 2022 Jan;33(1):67-79. doi: 10.1016/j.nec.2021.09.006. PMID: 34801143Free PMC Article
Keith KA, Reed LK, Nguyen A, Qaiser R
Neurosurg Clin N Am 2022 Jan;33(1):135-148. doi: 10.1016/j.nec.2021.09.010. PMID: 34801137
Valdebran M, Wine Lee L
Curr Opin Pediatr 2020 Aug;32(4):498-505. doi: 10.1097/MOP.0000000000000925. PMID: 32692048
Poh TY, Mac Aogáin M, Chan AK, Yii AC, Yong VF, Tiew PY, Koh MS, Chotirmall SH
Expert Rev Respir Med 2017 Apr;11(4):285-298. Epub 2017 Mar 24 doi: 10.1080/17476348.2017.1305895. PMID: 28282995
Cereda A, Carey JC
Orphanet J Rare Dis 2012 Oct 23;7:81. doi: 10.1186/1750-1172-7-81. PMID: 23088440Free PMC Article


Koster MJ, Samec MJ, Warrington KJ
J Clin Rheumatol 2023 Sep 1;29(6):298-306. Epub 2022 Oct 17 doi: 10.1097/RHU.0000000000001905. PMID: 36251488
Oh J
Continuum (Minneap Minn) 2022 Aug 1;28(4):1006-1024. doi: 10.1212/CON.0000000000001156. PMID: 35938655
Keith KA, Reed LK, Nguyen A, Qaiser R
Neurosurg Clin N Am 2022 Jan;33(1):135-148. doi: 10.1016/j.nec.2021.09.010. PMID: 34801137
De Wel B, Claeys KG
Curr Opin Neurol 2021 Oct 1;34(5):714-720. doi: 10.1097/WCO.0000000000000963. PMID: 34914668
Diñeiro M, Capín R, Cifuentes GÁ, Fernández-Vega B, Villota E, Otero A, Santiago A, Pruneda PC, Castillo D, Viejo-Díaz M, Hernando I, Durán NS, Álvarez R, Lago CG, Ordóñez GR, Fernández-Vega Á, Cabanillas R, Cadiñanos J
Acta Ophthalmol 2020 Dec;98(8):e1034-e1048. Epub 2020 Jun 1 doi: 10.1111/aos.14479. PMID: 32483926Free PMC Article


Dou Z, Xia Y, Zhang J, Li Y, Zhang Y, Zhao L, Huang Z, Sun H, Wu L, Han D, Liu Y
Front Endocrinol (Lausanne) 2021;12:728032. Epub 2021 Dec 23 doi: 10.3389/fendo.2021.728032. PMID: 35002950Free PMC Article
Saha S, Roy P, Corbitt C, Kakar SS
Cells 2021 Jun 28;10(7) doi: 10.3390/cells10071613. PMID: 34203240Free PMC Article
Geenen KR, Patel S, Thiele EA
Dev Med Child Neurol 2021 Mar;63(3):259-262. Epub 2020 Oct 31 doi: 10.1111/dmcn.14723. PMID: 33135153
Kagan R, Kellogg-Spadt S, Parish SJ
Drugs Aging 2019 Oct;36(10):897-908. doi: 10.1007/s40266-019-00700-w. PMID: 31452067Free PMC Article
Sosa-Reina MD, Nunez-Nagy S, Gallego-Izquierdo T, Pecos-Martín D, Monserrat J, Álvarez-Mon M
Biomed Res Int 2017;2017:2356346. Epub 2017 Sep 20 doi: 10.1155/2017/2356346. PMID: 29291206Free PMC Article


Fardeau C, Alafaleq M, Dhaenens CM, Dollfus H, Koné-Paut I, Grunewald O, Morel JB, Titah C, Saadoun D, Lazeran PO, Meunier I
Clin Genet 2023 Apr;103(4):453-458. Epub 2022 Dec 30 doi: 10.1111/cge.14286. PMID: 36543582
Košutova P, Mikolka P
Physiol Res 2021 Dec 30;70(Suppl4):S567-S583. doi: 10.33549/physiolres.934767. PMID: 35199544Free PMC Article
Cristescu Teodor R, Mihaltan FD
Rom J Ophthalmol 2019 Jan-Mar;63(1):2-9. PMID: 31198891Free PMC Article
Park CY, Lee JK, Chuck RS
BMC Ophthalmol 2018 Oct 25;18(1):276. doi: 10.1186/s12886-018-0939-3. PMID: 30359246Free PMC Article
Damgaard Sandahl T
Dan Med J 2014 Oct;61(10):B4755. PMID: 25283626

Clinical prediction guides

Robles Bayón A
Neurologia (Engl Ed) 2022 Jul-Aug;37(6):480-491. Epub 2021 May 25 doi: 10.1016/j.nrleng.2019.03.027. PMID: 35779868
Boßelmann CM
Seizure 2021 Nov;92:230-233. Epub 2021 Sep 27 doi: 10.1016/j.seizure.2021.09.019. PMID: 34607271
Nazerian P, Mueller C, Soeiro AM, Leidel BA, Salvadeo SAT, Giachino F, Vanni S, Grimm K, Oliveira MT Jr, Pivetta E, Lupia E, Grifoni S, Morello F; ADvISED Investigators
Circulation 2018 Jan 16;137(3):250-258. Epub 2017 Oct 13 doi: 10.1161/CIRCULATIONAHA.117.029457. PMID: 29030346
Wijdicks EF, Bamlet WR, Maramattom BV, Manno EM, McClelland RL
Ann Neurol 2005 Oct;58(4):585-93. doi: 10.1002/ana.20611. PMID: 16178024
Frolkis VV
Gerontology 1992;38(1-2):80-6. doi: 10.1159/000213310. PMID: 1612465

Recent systematic reviews

Freitas DA, Souza-Santos R, Carvalho LMA, Barros WB, Neves LM, Brasil P, Wakimoto MD
PLoS One 2020;15(12):e0242367. Epub 2020 Dec 15 doi: 10.1371/journal.pone.0242367. PMID: 33320867Free PMC Article
Sosa-Reina MD, Nunez-Nagy S, Gallego-Izquierdo T, Pecos-Martín D, Monserrat J, Álvarez-Mon M
Biomed Res Int 2017;2017:2356346. Epub 2017 Sep 20 doi: 10.1155/2017/2356346. PMID: 29291206Free PMC Article
Sorensen CJ, DeSanto K, Borgelt L, Phillips KT, Monte AA
J Med Toxicol 2017 Mar;13(1):71-87. Epub 2016 Dec 20 doi: 10.1007/s13181-016-0595-z. PMID: 28000146Free PMC Article
Fhon JR, Rodrigues RA, Neira WF, Huayta VM, Robazzi ML
Rev Esc Enferm USP 2016 Nov-Dec;50(6):1005-1013. doi: 10.1590/S0080-623420160000700018. PMID: 28198967
Terelak-Borys B, Skonieczna K, Grabska-Liberek I
Med Sci Monit 2012 Aug;18(8):RA138-144. doi: 10.12659/msm.883260. PMID: 22847215Free PMC Article

Supplemental Content

Table of contents

    Clinical resources

    Practice guidelines

    • PubMed
      See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the FAQ for details.
    • Bookshelf
      See practice and clinical guidelines in NCBI Bookshelf. The search results may include broader topics and may not capture all published guidelines. See the FAQ for details.

    Consumer resources

    Recent activity

    Your browsing activity is empty.

    Activity recording is turned off.

    Turn recording back on

    See more...