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Hemochromatosis type 2A(HFE2A)

MedGen UID:
356321
Concept ID:
C1865614
Disease or Syndrome
Synonyms: HFE2A; HJV (HFE2)-Related Juvenile Hemochromatosis
 
Gene (location): HJV (1q21.1)
 
Monarch Initiative: MONDO:0011216
OMIM®: 602390

Disease characteristics

Excerpted from the GeneReview: Juvenile Hemochromatosis
Juvenile hemochromatosis is characterized by onset of severe iron overload occurring typically in the first to third decades of life. Males and females are equally affected. Prominent clinical features include hypogonadotropic hypogonadism, cardiomyopathy, glucose intolerance and diabetes, arthropathy, and liver fibrosis or cirrhosis. Hepatocellular cancer has been reported occasionally. The main cause of death is cardiac disease. If juvenile hemochromatosis is detected early enough and if blood is removed regularly through the process of phlebotomy to achieve iron depletion, morbidity and mortality are greatly reduced. [from GeneReviews]
Authors:
Alberto Piperno  |  Francesca Bertola  |  Angela Bentivegna   view full author information

Additional description

From OMIM
Juvenile, or type 2, hemochromatosis is an autosomal recessive inborn error of iron metabolism that leads to severe iron loading and organ failure before 30 years of age. The common complications of iron overload, including liver cirrhosis, cardiac disease, endocrine failure, diabetes, arthropathy, and skin pigmentation, are similar to those of adult-onset hereditary hemochromatosis, but hypogonadism and cardiomyopathy are the most common symptoms at presentation. Heart failure and/or major arrhythmias are usually the cause of death in the absence of treatment. Early detection of the disorder is important because iron depletion by phlebotomy can prevent organ damage and all disease manifestations (summary by Roetto et al., 1999). Genetic Heterogeneity of Hemochromatosis Type 2 Hemochromatosis type 2B (HFE2B; 613313) is caused by mutation in the hepcidin gene (HAMP; 606464) on chromosome 19q13.  http://www.omim.org/entry/602390

Clinical features

From HPO
Amenorrhea
MedGen UID:
8016
Concept ID:
C0002453
Finding
Absence of menses for an interval of time equivalent to a total of more than (or equal to) 3 previous cycles or 6 months.
Azoospermia
MedGen UID:
2150
Concept ID:
C0004509
Disease or Syndrome
Absence of any measurable level of sperm,whereby spermatozoa cannot be observed even after centrifugation of the semen pellet.
Infertility disorder
MedGen UID:
43876
Concept ID:
C0021359
Finding
Inability to conceive for at least one year after trying and having unprotected sex. Causes of female infertility include endometriosis, fallopian tubes obstruction, and polycystic ovary syndrome. Causes of male infertility include abnormal sperm production or function, blockage of the epididymis, blockage of the ejaculatory ducts, hypospadias, exposure to pesticides, and health related issues.
Cardiac arrhythmia
MedGen UID:
2039
Concept ID:
C0003811
Finding
Any cardiac rhythm other than the normal sinus rhythm. Such a rhythm may be either of sinus or ectopic origin and either regular or irregular. An arrhythmia may be due to a disturbance in impulse formation or conduction or both.
Primary dilated cardiomyopathy
MedGen UID:
2880
Concept ID:
C0007193
Disease or Syndrome
Familial dilated cardiomyopathy is a genetic form of heart disease. It occurs when heart (cardiac) muscle becomes thin and weakened in at least one chamber of the heart, causing the open area of the chamber to become enlarged (dilated). As a result, the heart is unable to pump blood as efficiently as usual. To compensate, the heart attempts to increase the amount of blood being pumped through the heart, leading to further thinning and weakening of the cardiac muscle. Over time, this condition results in heart failure.\n\nIt usually takes many years for symptoms of familial dilated cardiomyopathy to cause health problems. They typically begin in mid-adulthood, but can occur at any time from infancy to late adulthood. Signs and symptoms of familial dilated cardiomyopathy can include an irregular heartbeat (arrhythmia), shortness of breath (dyspnea), extreme tiredness (fatigue), fainting episodes (syncope), and swelling of the legs and feet. In some cases, the first sign of the disorder is sudden cardiac death. The severity of the condition varies among affected individuals, even in members of the same family.
Congestive heart failure
MedGen UID:
9169
Concept ID:
C0018802
Disease or Syndrome
The presence of an abnormality of cardiac function that is responsible for the failure of the heart to pump blood at a rate that is commensurate with the needs of the tissues or a state in which abnormally elevated filling pressures are required for the heart to do so. Heart failure is frequently related to a defect in myocardial contraction.
Cardiomyopathy
MedGen UID:
209232
Concept ID:
C0878544
Disease or Syndrome
A myocardial disorder in which the heart muscle is structurally and functionally abnormal, in the absence of coronary artery disease, hypertension, valvular disease and congenital heart disease sufficient to cause the observed myocardial abnormality.
Hepatomegaly
MedGen UID:
42428
Concept ID:
C0019209
Finding
Abnormally increased size of the liver.
Cirrhosis of liver
MedGen UID:
7368
Concept ID:
C0023890
Disease or Syndrome
A chronic disorder of the liver in which liver tissue becomes scarred and is partially replaced by regenerative nodules and fibrotic tissue resulting in loss of liver function.
Lethargy
MedGen UID:
7310
Concept ID:
C0023380
Sign or Symptom
A state of disinterest, listlessness, and indifference, resulting in difficulty performing simple tasks or concentrating.
Arthritis
MedGen UID:
2043
Concept ID:
C0003864
Disease or Syndrome
Inflammation of a joint.
Splenomegaly
MedGen UID:
52469
Concept ID:
C0038002
Finding
Abnormal increased size of the spleen.
Increased circulating iron concentration
MedGen UID:
57739
Concept ID:
C0151900
Finding
The concentration of iron in the blood circulation is above the upper limit of normal.
Increased circulating ferritin concentration
MedGen UID:
69130
Concept ID:
C0241013
Finding
Increased concentration of ferritin in the blood circulation.
Hyperpigmentation of the skin
MedGen UID:
57992
Concept ID:
C0162834
Pathologic Function
A darkening of the skin related to an increase in melanin production and deposition.
Hypogonadotropic hypogonadism
MedGen UID:
82883
Concept ID:
C0271623
Disease or Syndrome
Hypogonadotropic hypogonadism is characterized by reduced function of the gonads (testes in males or ovaries in females) and results from the absence of the gonadal stimulating pituitary hormones

Professional guidelines

PubMed

Salgia RJ, Brown K
Clin Liver Dis 2015 Feb;19(1):187-98. Epub 2014 Oct 23 doi: 10.1016/j.cld.2014.09.011. PMID: 25454304

Recent clinical studies

Diagnosis

Santiago de Sousa Azulay R, Magalhães M, Tavares MDG, Dualibe R, Barbosa L, Sá Gaspar S, Faria AM, Nascimento GC, Damianse SDSP, Rocha VCC, Gomes MB, Dos Santos Faria M
Am J Case Rep 2020 Apr 24;21:e923108. doi: 10.12659/AJCR.923108. PMID: 32327622Free PMC Article

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