Diamond-blackfan Anemia 1; Dba1

Description

Diamond-Blackfan anemia (DBA) is an inherited red blood cell aplasia that usually presents in the first year of life. The main features are normochromic macrocytic anemia, reticulocytopenia, and nearly absent erythroid progenitors in the bone marrow. Patients show growth retardation, and approximately 30 to 50% have craniofacial, upper limb, heart, and urinary system congenital malformations. The majority of patients have increased mean corpuscular volume, elevated erythrocyte adenosine deaminase activity, and persistence of hemoglobin F. However, some DBA patients do not exhibit these findings, and even in the same family, symptoms can vary between affected family members (summary by Landowski et al., 2013). Genetic Heterogeneity of Diamond-Blackfan AnemiaA locus for DBA (DBA2 ) has been mapped to chromosome 8p23-p22. Other forms of DBA include DBA3 (OMIM ), caused by mutation in the RPS24 gene (OMIM ) on 10q22; DBA4 (OMIM ), caused by mutation in the RPS17 gene (OMIM ) on 15q; DBA5 (OMIM ), caused by mutation in the RPL35A gene (OMIM ) on 3q29; DBA6 (OMIM ), caused by mutation in the RPL5 gene (OMIM ) on 1p22.1; DBA7 (OMIM ), caused by mutation in the RPL11 gene (OMIM ) on 1p36; DBA8 (OMIM ), caused by mutation in the RPS7 gene (OMIM ) on 2p25; DBA9 (OMIM ), caused by mutation in the RPS10 gene (OMIM ) on 6p; DBA10 (OMIM ), caused by mutation in the RPS26 (OMIM ) gene on 12q; DBA11 (OMIM ), caused by mutation in the RPL26 gene (OMIM ) on 17p13; DBA12 (OMIM ), caused by mutation in the RPL15 gene (OMIM ) on 3p24; DBA13 (OMIM ), caused by mutation in the RPS29 gene (OMIM ) on 14q; DBA14 (OMIM ), caused by mutation in the TSR2 gene (OMIM ) on Xp11; DBA15 (OMIM ), caused by mutation in the RPS28 gene (OMIM ) on 19p13; DBA16 (OMIM ), caused by mutation in the RPL27 gene (OMIM ) on chromosome 17q21; and DBA17 (OMIM ), caused by mutation in the RPS27 gene (OMIM ) on chromosome 1q21.Boria et al. (2010) reviewed the molecular basis of Diamond-Blackfan anemia, emphasizing that it is a disorder of defective ribosome synthesis.Gazda et al. (2012) completed a large-scale screen of 79 ribosomal protein genes in families with Diamond-Blackfan anemia and stated that of the 10 known DBA-associated genes, RPS19 accounts for approximately 25% of patients; RPS24, 2%; RPS17, 1%; RPL35A, 3.5%; RPL5, 6.6%; RPL11, 4.8%; RPS7, 1%; RPS10, 6.4%; RPS26, 2.6%; and RPL26, 1%. Gazda et al. (2012) stated that in total these mutations account for approximately 54% of all DBA patients.In a study of 98 Japanese patients with DBA, Wang et al. (2015) detected probable causative mutations or large deletions in ribosomal protein genes in 56 (55%) of the patients, involving the RPS19 gene in 16 patients, RPL5 in 12, RPS17 in 7, RPL35A in 7, RPL11 in 5, and RPS26 in 4; RPS7, RPS10, RPL27, and RPS27 were each mutated in 1 patient.

Clinical Features

Top most frequent phenotypes and symptoms related to Diamond-blackfan Anemia 1; Dba1

  • Intellectual disability
  • Short stature
  • Microcephaly
  • Growth delay
  • Hypertelorism
  • Failure to thrive
  • Micrognathia
  • Strabismus
  • Cleft palate
  • Anemia

And another 68 symptoms. If you need more information about this disease we can help you.

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Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

Diamond-blackfan Anemia 1; Dba1 Is also known as red cell aplasia, pure, hereditary, anemia, congenital erythroid hypoplastic, dba, blackfan-diamond syndrome, anemia, congenital hypoplastic, of blackfan and diamond, bds, erythrogenesis imperfecta, aase-smith syndrome ii, aregenerative anemia, chronic congenital.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.


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Diamond-blackfan Anemia 1; Dba1 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
RPS19 Comprehensive - Sequence & Deletion/Duplication Analysis.

By Baylor Miraca Genetics Laboratories (United States).

RPS19
Specificity
100 %
Genes
34 %
RPS19 Deletion/Duplication Analysis.

By Baylor Miraca Genetics Laboratories (United States).

RPS19
Specificity
100 %
Genes
34 %
RPS19 Deletion/Duplication Analysis (Prenatal Diagnosis).

By Baylor Miraca Genetics Laboratories (United States).

RPS19
Specificity
100 %
Genes
34 %
RPS19 Sequence Analysis.

By Baylor Miraca Genetics Laboratories (United States).

RPS19
Specificity
100 %
Genes
34 %
RPS19 Sequence Analysis (Familial Mutation/Variant Analysis).

By Baylor Miraca Genetics Laboratories (United States).

RPS19
Specificity
100 %
Genes
34 %
RPS19 Sequence Analysis (Prenatal Diagnosis).

By Baylor Miraca Genetics Laboratories (United States).

RPS19
Specificity
100 %
Genes
34 %
Non-immune Hydrops Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

RIT1, RPL11, RPL35A, RPL5, RPS10, RPS17, RPS19, RPS24, RPS26, SEC23B, SLC17A5, BRAF, SMPD1, SOS1, SOS2, SOX18, UROS, CBL, SHOC2, ALG9 , (...)

View the complete list with 66 more genes
Specificity
3 %
Genes
67 %
Bone Marrow Failure.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University (United States).

RPL11, RPL35A, RPL5, RPS10, RPS15, RPS19, RPS24, RPS26, RPS27A, RPS7, BRCA2, SRP72, TERT, THPO, TINF2, XRCC2, RPL36, NHP2, NOP10, SBDS , (...)

View the complete list with 23 more genes
Specificity
5 %
Genes
67 %

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Sources and references

You can check the following sources for additional information.

OMIM Genetic Syndrome Finder

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