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Boudin-Mortier syndrome(BOMOS)

MedGen UID:
1794202
Concept ID:
C5561992
Disease or Syndrome
Synonyms: BOMOS; Tall stature and long digits with extra epiphyses
 
Gene (location): NPR3 (5p13.3)
 
Monarch Initiative: MONDO:0859194
OMIM®: 619543

Definition

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
Arachnodactyly
MedGen UID:
2047
Concept ID:
C0003706
Congenital Abnormality
Abnormally long and slender fingers ("spider fingers").
Pes planus
MedGen UID:
42034
Concept ID:
C0016202
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:
510551
Concept ID:
C0158473
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:
322130
Concept ID:
C1833148
Finding
Length of the thumb is greater than normal.
Long fingers
MedGen UID:
346836
Concept ID:
C1858091
Finding
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:
400514
Concept ID:
C1864375
Finding
Increased length of the big toe.
Long toe
MedGen UID:
461963
Concept ID:
C3150613
Finding
Toes that appear disproportionately long compared to the foot.
Pseudoepiphyses of the proximal phalanges of the hand
MedGen UID:
869498
Concept ID:
C4023926
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:
869509
Concept ID:
C4023937
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:
869673
Concept ID:
C4024101
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.
Clinodactyly
MedGen UID:
1644094
Concept ID:
C4551485
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:
7671
Concept ID:
C0026267
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:
720712
Concept ID:
C1298820
Anatomical Abnormality
An abnormal localized widening (dilatation) of the aortic root.
Tall stature
MedGen UID:
69137
Concept ID:
C0241240
Finding
A height above that which is expected according to age and gender norms.
Difficulty walking
MedGen UID:
86319
Concept ID:
C0311394
Finding
Reduced ability to walk (ambulate).
Joint hypermobility
MedGen UID:
336793
Concept ID:
C1844820
Finding
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:
347616
Concept ID:
C1858085
Finding
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:
781174
Concept ID:
C2051831
Finding
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:
318930
Concept ID:
C1833667
Finding
An abnormally increased level of bone isoforms of alkaline phosphatase, tissue-nonspecific isozyme in the blood.
Myopia
MedGen UID:
44558
Concept ID:
C0027092
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

PubMed

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Recent clinical studies

Etiology

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
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Cereda A, Carey JC
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Diagnosis

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
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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
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Therapy

Dou Z, Xia Y, Zhang J, Li Y, Zhang Y, Zhao L, Huang Z, Sun H, Wu L, Han D, Liu Y
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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

Prognosis

Fardeau C, Alafaleq M, Dhaenens CM, Dollfus H, Koné-Paut I, Grunewald O, Morel JB, Titah C, Saadoun D, Lazeran PO, Meunier I
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Cristescu Teodor R, Mihaltan FD
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Clinical prediction guides

Robles Bayón A
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Recent systematic reviews

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