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{{Fabry's disease}}
{{Fabry's disease}}
{{CMG}}; {{AE}}


{{CMG}} {{AE}} {{SUF}}
==Overview==
Fabry disease (also known as alpha-galactosidase A deficiency, ceramide trihexosidase deficiency, angiokeratoma corporis diffusum, Anderson Fabry disease) is an X-linked recessive inherited lysosomal storage disorder.
 
==Historical Perspective==
Fabry's disease is a rare inherited genetic condition that leads to the α-galactosidase A enzyme deficiency in individuals. Fabry disease (or Anderson - Fabry disease) was first described separately by two physicians at the end of the 19th century. The feature and pathophysiology of the disease have been revealed through the years by various scientists.
 
==Classification==
Fabry's disease can be classified based on its different phenotypes or complications. Its different phenotypes are: classic and late-onset. The different complications involves: cardiac, renal, and neuropathic forms.
 
==Pathophysiology==
Genes involved in the pathogenesis of Fabry's disease include the GLA gene, which codes the important enzyme of alpha-galactosidase. The absence or lack of this enzyme causes Gb3 accumulation in different organs. The main pathological finding is detection of these inclusion in different cells with electron microscopies.
 
==Causes==
Fabry's disease is caused by a mutation in the GLA gene.
 
==Differentiating Gonadoblastoma from Other Diseases==
Fabry's disease is often misdiagnosed due to its rarity and wide range of non-specific clinical manifestations. Fabry's disease be differentiated from various kind of condition based on the symptoms and organ involvement.
 
==Epidemiology and Demographics==
Fabry's disease is a rare condition with a prevalence of approximately 6:100,000 to 0.8:100,000 in men. This disease mostly affects men and has no rational disparities.
 
==Risk Factors==
There are no established risk factors for Fabry's disease.
 
==Screening==
 
 
==Natural History, Complications, and Prognosis==
If Fabry's disease leaves untreated it can lead to end-stage renal disease (ESRD), cardiomyopathy, and stroke which are the main causes of death in these patients. Enzyme replacement therapy (ERT) treatment has an important role in their life expectancy and disease complications.
 
==Diagnosis==
 
===History and Symptoms===
A positive history of angiokeratomas, peripheral neuropathies, gradually decreased sweating, and gastrointestinal manifestations in childhood are suggestive of classic Fabry's disease. In the late-onset form of the disease neuropathic pain and gastrointestinal manifestation is not common and they may have organ-specific symptoms.
 
===Physical Examination===
The presence of angiokeratomas on physical examination is highly suggestive of Fabry's disease. other physical examinations can be varied due to organ involvement.
 
===Laboratory Findings===
A reduced concentration of serum Alpha-galactosidase A level or its activity is diagnostic of Fabry's disease. Other laboratory findings can vary due to organ involvement.
 
===Electrocardiogram===
However the ECG patterns are not specific for Fabry's, it may be helpful in the diagnosis of Fabry's disease cardiac complications.
 
===CT scan===
CT scan can show different non-specific aspects of the brain, lung, and kidney involvement in Fabry's disease.
 
===MRI===
MRI can play an important role in the diagnosis of the brain and cardiac complications of Fabry's disease. there are also some non-specific findings in renal involvement.
 
===Echocardiography and ultrasound===
Echocardiography and renal ultrasound can reveal the diagnostic pattern of Fabry's disease in these particular organs.
 
===Other Imaging Findings===
There are no other imaging findings associated with Fabry's disease.
 
===Other Diagnostic Studies===
There are no other diagnostic studies associated with Fabry's disease.


==Overview==
==Treatment==
===Medical Therapy===
The mainstay of therapy for Fabry's disease is enzyme replacement by Agalsidases. Other treatment is increasing the enzyme activity by Migalastat. There are also some general treatments for Fabry's disease complications.


**'''Fabry disease''' (also known as '''alpha-galactosidase A deficiency, ceramide trihexosidase deficiency, angiokeratoma corporis diffusum, Anderson Fabry disease)''' is an [[X-linked recessive]] inherited [[Lysosomal storage disease|lysosomal storage disorder.]]
===Surgery===
**It occurs as a result of the body's inability to make the enzyme alpha-galactosidase A. This enzyme encoded by the GLA gene located on the long arm of the X chromosome (q21-22) is in turn responsible for breaking down a type of fat called [[Globotriaosylceramide 3-beta-N-acetylgalactosaminyltransferase|globotriaosylceramide]] (Gb3 or GL-3) into building blocks that are used by the cells of the body.
Kidney transplantation can be a surgical option in certain Fabry's disease patients.
**The Glycosphingolipid storage initiates a cascade of events that begins with the dysfunction of basic metabolic processes on the cellular level followed by progression to cell death, inflammatory events, and progressive major organ dysfunction.<ref name="pmid16980809">{{cite journal| author=Eng CM, Germain DP, Banikazemi M, Warnock DG, Wanner C, Hopkin RJ | display-authors=etal| title=Fabry disease: guidelines for the evaluation and management of multi-organ system involvement. | journal=Genet Med | year= 2006 | volume= 8 | issue= 9 | pages= 539-48 | pmid=16980809 | doi=10.1097/01.gim.0000237866.70357.c6 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16980809  }}</ref>
**The signs and symptoms of the disease can vary regarding the phenotype class of disease.
**Prenatal and neonatal studies of the histopathology of Fabry disease have confirmed that pathogenic GL3 accumulations occur in the maternal region of the placenta, fetal tissues, and the fetal placenta regions of affected males. In male fetuses affected these accumulations have been found in different types of cells. This prenatal storage suggests that the process of Fabry disease may lead to early childhood symptoms in the classic form of the disease<ref name="pmid9560877">{{cite journal| author=Elleder M, Poupĕtová H, Kozich V| title=[Fetal pathology in Fabry's disease and mucopolysaccharidosis type I]. | journal=Cesk Patol | year= 1998 | volume= 34 | issue= 1 | pages= 7-12 | pmid=9560877 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9560877  }}</ref><ref name="pmid22078290">{{cite journal| author=Thurberg BL, Politei JM| title=Histologic abnormalities of placental tissues in Fabry disease: a case report and review of the literature. | journal=Hum Pathol | year= 2012 | volume= 43 | issue= 4 | pages= 610-4 | pmid=22078290 | doi=10.1016/j.humpath.2011.07.020 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22078290  }}</ref>, however, in atypical cases and heterozygote females the symptoms can be presented in older ages by different patterns.
**The symptoms can be different regarding the type of organs that these inclusion bodies accumulate in.
**Fabry disease is a rare condition that can affect people regardless of their ethnic background.
**If remains untreated brain, heart, and kidney would be the three main organs that get affected.
**The main treatment method for such patients is Enzyme Replacement Therapy which is costly and expensive.
*


==References==
==References==
<br />{{Reflist|2}}
{{reflist|2}}
 
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Revision as of 18:21, 23 May 2022

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

Fabry disease (also known as alpha-galactosidase A deficiency, ceramide trihexosidase deficiency, angiokeratoma corporis diffusum, Anderson Fabry disease) is an X-linked recessive inherited lysosomal storage disorder.

Historical Perspective

Fabry's disease is a rare inherited genetic condition that leads to the α-galactosidase A enzyme deficiency in individuals. Fabry disease (or Anderson - Fabry disease) was first described separately by two physicians at the end of the 19th century. The feature and pathophysiology of the disease have been revealed through the years by various scientists.

Classification

Fabry's disease can be classified based on its different phenotypes or complications. Its different phenotypes are: classic and late-onset. The different complications involves: cardiac, renal, and neuropathic forms.

Pathophysiology

Genes involved in the pathogenesis of Fabry's disease include the GLA gene, which codes the important enzyme of alpha-galactosidase. The absence or lack of this enzyme causes Gb3 accumulation in different organs. The main pathological finding is detection of these inclusion in different cells with electron microscopies.

Causes

Fabry's disease is caused by a mutation in the GLA gene.

Differentiating Gonadoblastoma from Other Diseases

Fabry's disease is often misdiagnosed due to its rarity and wide range of non-specific clinical manifestations. Fabry's disease be differentiated from various kind of condition based on the symptoms and organ involvement.

Epidemiology and Demographics

Fabry's disease is a rare condition with a prevalence of approximately 6:100,000 to 0.8:100,000 in men. This disease mostly affects men and has no rational disparities.

Risk Factors

There are no established risk factors for Fabry's disease.

Screening

Natural History, Complications, and Prognosis

If Fabry's disease leaves untreated it can lead to end-stage renal disease (ESRD), cardiomyopathy, and stroke which are the main causes of death in these patients. Enzyme replacement therapy (ERT) treatment has an important role in their life expectancy and disease complications.

Diagnosis

History and Symptoms

A positive history of angiokeratomas, peripheral neuropathies, gradually decreased sweating, and gastrointestinal manifestations in childhood are suggestive of classic Fabry's disease. In the late-onset form of the disease neuropathic pain and gastrointestinal manifestation is not common and they may have organ-specific symptoms.

Physical Examination

The presence of angiokeratomas on physical examination is highly suggestive of Fabry's disease. other physical examinations can be varied due to organ involvement.

Laboratory Findings

A reduced concentration of serum Alpha-galactosidase A level or its activity is diagnostic of Fabry's disease. Other laboratory findings can vary due to organ involvement.

Electrocardiogram

However the ECG patterns are not specific for Fabry's, it may be helpful in the diagnosis of Fabry's disease cardiac complications.

CT scan

CT scan can show different non-specific aspects of the brain, lung, and kidney involvement in Fabry's disease.

MRI

MRI can play an important role in the diagnosis of the brain and cardiac complications of Fabry's disease. there are also some non-specific findings in renal involvement.

Echocardiography and ultrasound

Echocardiography and renal ultrasound can reveal the diagnostic pattern of Fabry's disease in these particular organs.

Other Imaging Findings

There are no other imaging findings associated with Fabry's disease.

Other Diagnostic Studies

There are no other diagnostic studies associated with Fabry's disease.

Treatment

Medical Therapy

The mainstay of therapy for Fabry's disease is enzyme replacement by Agalsidases. Other treatment is increasing the enzyme activity by Migalastat. There are also some general treatments for Fabry's disease complications.

Surgery

Kidney transplantation can be a surgical option in certain Fabry's disease patients.

References


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