OSLAM syndrome

Summary

OSLAM syndrome (MONDO:0008139) is a disease. A subtype of congenital limb malformation — broader associated-gene and molecular evidence is on the parent page (see Disease family below).

At a glance

• Prevalence: <1 / 1 000 000 (Worldwide) [Orphanet-validated]
• Phenotypes (HPO): 7

Clinical features

Epidemiology

Prevalence records

2 prevalence record(s), Orphanet:

Type	Class	Value	Geography	Validation
Cases/families		3	Worldwide	Validated
Point prevalence	<1 / 1 000 000		Worldwide	Validated

Signs & symptoms

Clinical features (HPO)

7 HPO clinical features (Orphanet curated; top 7 by frequency):

HPO ID	Term	Frequency
HP:0000670	Carious teeth	Very frequent (80-99%)
HP:0001874	Abnormality of neutrophils	Very frequent (80-99%)
HP:0002669	Osteosarcoma	Very frequent (80-99%)
HP:0005518	Increased mean corpuscular volume	Very frequent (80-99%)
HP:0004322	Short stature	Frequent (30-79%)
HP:0002974	Radioulnar synostosis	Occasional (5-29%)
HP:0004209	Clinodactyly of the 5th finger	Occasional (5-29%)

Identifiers

Disease identifiers

Field	Value
Canonical name	OSLAM syndrome
Mondo ID	MONDO:0008139
MeSH	C537138
OMIM	165660
Orphanet	2760
SNOMED CT	733064004
UMLS	C1833792
MedGen	331588
GARD	0004129
Is cancer (heuristic)	no

Also known as: OSLAM syndrome · osteosarcoma, limb anomalies (clinodactyly, absence of digital ray in foot, bilateral radioulnar synostosis) and macrocytosis without anaemia · osteosarcoma, limb anomalies (clinodactyly, absence of digital ray in foot, bilateral radioulnar synostosis) and macrocytosis without anemia · osteosarcoma-limb anomalies-erythroid macrocytosis syndrome

Disease family

This is a subtype of congenital limb malformation. Genetic, therapeutic, and trial evidence is largely curated at the broader-term level — see the parent page for the associated-gene cohort and molecular evidence.

Classification path: disease › human disease › disease by developmental or physiological process › disorder of development or morphogenesis › developmental defect during embryogenesis › congenital limb malformation › OSLAM syndrome

Related subtypes (106): Adams-Oliver syndrome, ADULT syndrome, Hypoglossia-hypodactyly syndrome, ankyloblepharon-ectodermal defects-cleft lip/palate syndrome, Cooks syndrome, Townes-Brocks syndrome, brachydactyly-arterial hypertension syndrome, brachydactyly-preaxial hallux varus syndrome, fibular aplasia-ectrodactyly syndrome, Brachymorphism-onychodysplasia-dysphalangism syndrome, brachytelephalangy-dysmorphism-Kallmann syndrome, femoral-facial syndrome, laurin-Sandrow syndrome, Emery-Nelson syndrome, hand-foot-genital syndrome, IVIC syndrome, Leri pleonosteosis, pelvis-shoulder dysplasia, phocomelia-ectrodactyly-deafness-sinus arrhythmia syndrome, Poland syndrome, crossed polysyndactyly, postaxial tetramelic oligodactyly, radio-renal syndrome, scalp defects-postaxial polydactyly syndrome, splenogonadal fusion-limb defects-micrognathia syndrome, Karsch-Neugebauer syndrome, symphalangism with multiple anomalies of hands and feet, proximal symphalangism, tarsal-carpal coalition syndrome, extensor tendons of finger anomalies, tetramelic monodactyly, thumb stiffness-brachydactyly-intellectual disability syndrome, tibia, hypoplasia or aplasia of, with polydactyly, Say-field-Coldwell syndrome, triphalangeal thumbs-brachyectrodactyly syndrome, humerus trochlea aplasia, Aphalangy-hemivertebrae-urogenital-intestinal dysgenesis syndrome, camptodactyly syndrome, Guadalajara type 2, Cenani-Lenz syndactyly syndrome, split hand-foot malformation 1 with sensorineural hearing loss, EEM syndrome, ectrodactyly-polydactyly syndrome, lethal faciocardiomelic dysplasia, femur-fibula-ulna complex, Gollop-Wolfgang complex, acromesomelic dysplasia 2B, Fuhrmann syndrome, hallux varus-preaxial polysyndactyly syndrome, Keutel syndrome, absence deformity of leg-cataract syndrome, intellectual disability-spasticity-ectrodactyly syndrome, fibular aplasia, tibial campomelia, and oligosyndactyly syndrome, pelviscapular dysplasia, radioulnar synostosis-developmental delay-hypotonia syndrome, rapadilino syndrome, EEC syndrome, Sugarman brachydactyly, tetraamelia-multiple malformations syndrome, thrombocytopenia-absent radius syndrome, phocomelia, Schinzel type, ulna hypoplasia-intellectual disability syndrome, syndactyly-telecanthus-anogenital and renal malformations syndrome, Mononen-Karnes-Senac syndrome, absent radius-anogenital anomalies syndrome, ulnar hypoplasia-split foot syndrome, aphalangy-syndactyly-microcephaly syndrome, 2q37 microdeletion syndrome, absent tibia-polydactyly-arachnoid cyst syndrome, skeletal dysplasia-epilepsy-short stature syndrome, autosomal recessive amelia, temtamy preaxial brachydactyly syndrome, radio-ulnar synostosis-amegakaryocytic thrombocytopenia syndrome, acropectoral syndrome, familial digital arthropathy-brachydactyly, Duane-radial ray syndrome, ulnar/fibula ray defect-brachydactyly syndrome, intellectual disability-brachydactyly-Pierre Robin syndrome, Al-Gazali syndrome, cocoon syndrome, mammary-digital-nail syndrome, syndactyly-camptodactyly and clinodactyly of fifth fingers-bifid toes syndrome, postaxial polydactyly-anterior pituitary anomalies-facial dysmorphism syndrome, split-foot malformation-mesoaxial polydactyly syndrome, TELO2-related intellectual disability-neurodevelopmental disorder, arthrogryposis syndrome, radial deficiency-tibial hypoplasia syndrome, camptodactyly-taurinuria syndrome, fibular dimelia-diplopodia syndrome, shoulder and thorax deformity-congenital heart disease syndrome, Cornelia de Lange syndrome, familial clubfoot with or without associated lower limb anomalies, heart-hand syndrome, hyperphosphatasia-intellectual disability syndrome, limb transversal defect-cardiac anomaly syndrome, triphalangeal thumb-polysyndactyly syndrome, multiple synostoses syndrome, hereditary thrombocytosis with transverse limb defect, thalidomide embryopathy, tibial aplasia-ectrodactyly syndrome, microcephaly-brachydactyly-kyphoscoliosis syndrome, acrofacial dysostosis, caudal regression-sirenomelia spectrum, Rubinstein-Taybi syndrome, acrocephalosyndactyly, congenital progressive bone marrow failure-B-cell immunodeficiency-skeletal dysplasia syndrome, omphalocele-diaphragmatic hernia-cardiovascular anomalies-radial ray defect syndrome

Genetics & variants

GWAS landscape

No GWAS associations recorded — common-variant (GWAS) studies don’t cover this disease (typical for Mendelian / rare diseases). See the curated gene cohort and Mendelian overlap below.

Variant details and genetic-evidence tiers

No tiered GWAS variants or ClinVar records for this disease.

Genes & proteins

No associated-gene cohort resolved for this disease. Atlas builds the molecular and therapeutic sections — associated genes, protein families, druggability, pathways, interactions, and drug associations — by aggregating over a disease’s associated genes (resolved via GWAS / GenCC / ClinVar / CIViC), and none resolved here. This is expected for antibody-mediated, autoimmune, or otherwise non-gene-defined conditions; the curated evidence for this disease is its clinical features, GWAS susceptibility, and clinical trials (above).

Function

No pathway enrichment — requires an associated-gene cohort.

Therapeutics

No druggable-target or therapeutic data for this disease’s cohort.

Clinical trials & evidence

Clinical trials

Clinical trials: 0.