NIH Rare Diseases :
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The following summary is from Orphanet , a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 3021 Definition A rare syndrome for which the acronym indicates the principal signs: RA for radial ray defect, PA for both patellae hypoplasia or aplasia and cleft or highly arched palate, DI for diarrhea and dislocated joints, LI for little size and limb malformations, NO for long, slender nose and normal intelligence. Epidemiology Prevalence is unknown, but the disease is rare. It was first described in families originating from different parts of Finland, but non-Finnish cases were later identified. Clinical description Growth delay is both pre- and postnatal. It is aggravated by feeding problems and diarrhea of no known cause. Etiology RAPADILINO syndrome is caused by mutations of the RECQL4 gene , a member of the family of RecQ-helicase genes which are at the origin of diseases predisposing to cancer . Differential diagnosis Differential diagnoses include Rothmund-Thomson syndrome (RTS) and Baller-Gerold syndrome (see these terms), which show considerable overlap with RAPADILINO syndrome. Mutations of the RECQL4 gene have also been described for these syndromes.The presence of poikiloderma, a major symptom of RTS, distinguishes this syndrome from RAPADILINO. Radial hypoplasia or aplasia, which is constant in RAPADILINO syndrome, is occasional in RTS. Equally, the presence of craniosynostosis in Baller-Gerold syndrome differentiates it from RAPADILINO syndrome. The three syndromes predispose the risk of developing malign pathologies, although this is significantly greater for RTS (mainly osteosarcoma and cutaneous cancers). The clinical differences can be explained by phenotype -genotype correlation, in particular by preservation of helicases in RAPADLINO syndrome. Genetic counseling RAPADILINO syndrome is transmitted in an autosomal recessive manner. Management and treatment Orthopedic and nutritional management is recommended when needed and appropriate investigation is recommended in the event of signs suggestive of osteosarcoma. Visit the Orphanet disease page for more resources.
MalaCards based summary :
Rapadilino Syndrome, also known as
absent thumbs, dislocated joints, long face with narrow palpebral fissures, long slender nose, arched palate, is related to
werner syndrome and
rothmund-thomson syndrome, type 2. An important gene associated with Rapadilino Syndrome is
RECQL4 (RecQ Like Helicase 4), and among its related pathways/superpathways are
Cell Cycle, Mitotic and
DNA Double-Strand Break Repair. Affiliated tissues include
skin and
bone, and related phenotypes are
hearing impairment and
short stature
Disease Ontology :
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A syndrome that is characterized by radial ray defect, patellae hypoplasia, cleft palate, diarrhea, dislocated joints, limb malformations, long nose and normal intelligence, has material basis in homozygous or compound heterozygous mutation in the DNA helicase gene RECQL4 on chromosome 8q24.
Genetics Home Reference :
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RAPADILINO syndrome is a rare condition that involves many parts of the body. Bone development is especially affected, causing many of the characteristic features of the condition.
Most affected individuals have underdevelopment or absence of the bones in the forearms and the thumbs, which are known as radial ray malformations. The kneecaps (patellae) can also be underdeveloped or absent. Other features include an opening in the roof of the mouth (cleft palate) or a high arched palate; a long, slender nose; and dislocated joints.
Many infants with RAPADILINO syndrome have difficulty feeding and experience diarrhea and vomiting. The combination of impaired bone development and feeding problems leads to slow growth and short stature in affected individuals.
Some individuals with RAPADILINO syndrome have harmless light brown patches of skin that resemble a skin finding known as café-au-lait spots. In addition, people with RAPADILINO syndrome have a slightly increased risk of developing a type of bone cancer known as osteosarcoma or a blood-related cancer called lymphoma. In individuals with RAPADILINO syndrome, osteosarcoma most often develops during childhood or adolescence, and lymphoma typically develops in young adulthood.
The condition name is an acronym for the characteristic features of the disorder: RA for radial ray malformations, PA for patella and palate abnormalities, DI for diarrhea and dislocated joints, LI for limb abnormalities and little size, and NO for slender nose and normal intelligence.
The varied signs and symptoms of RAPADILINO syndrome overlap with features of other disorders, namely Baller-Gerold syndrome and Rothmund-Thomson syndrome. These syndromes are also characterized by radial ray defects, skeletal abnormalities, and slow growth. All of these conditions can be caused by mutations in the same gene. Based on these similarities, researchers are investigating whether Baller-Gerold syndrome, Rothmund-Thomson syndrome, and RAPADILINO syndrome are separate disorders or part of a single syndrome with overlapping signs and symptoms.
KEGG :
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RAPADILINO syndrome is an abbreviation of its hallmark features: radial hypo-/aplasia, patellae hypo-/aplasia and cleft or highly arched palate, diarrhoea and dislocated joints, little size and limb malformation, nose slender and normal intelligence. It is an autosomal recessive disorder caused by mutations in human DNA helicase RECQL4. Unlike its allelic disorders Rothmund-Thomson syndrome and Baller-Gerold syndrome, RAPADILINO syndrome lacks poikiloderma.
UniProtKB/Swiss-Prot :
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RAPADILINO syndrome: Disease characterized by radial and patellar aplasia or hypoplasia.
Wikipedia :
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RAPADILINO syndrome is an autosomal recessive disorder characterized...
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Rare bone diseases 
