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  2. Methylenetetrahydrofolate reductase deficiency - Wikipedia

    en.wikipedia.org/wiki/Methylenetetrahydrofolate...

    MTHFR is the rate-limiting enzyme in the methyl cycle, which includes the conversion of homocysteine into methionine. Defects in variants of MTHFR can therefore lead to hyperhomocysteinemia. [9] There are two common variants of MTHFR deficiency. In the more significant of the two, the individual is homozygous for the 677T polymorphism.

  3. Methylenetetrahydrofolate reductase - Wikipedia

    en.wikipedia.org/wiki/Methylenetetrahydrofolate...

    Some mutations in this gene are associated with methylenetetrahydrofolate reductase deficiency. [6] [7] [8] Complex I deficiency with recessive spastic paraparesis has also been linked to MTHFR variants. In addition, the aberrant promoter hypermethylation of this gene is associated with male infertility and recurrent spontaneous abortion. [9] [10]

  4. rs1801133 - Wikipedia

    en.wikipedia.org/wiki/Rs1801133

    C677T or rs1801133 is a genetic variation—a single nucleotide polymorphism (SNP)—in the MTHFR gene. Among Americans the frequency of T-homozygosity ranges from 1% or less among people of sub-Saharan African descent to 20% or more among Italians and Hispanics. [1] It has been related to schizophrenia [2] Alzheimer's disease [3] depression [4 ...

  5. ICD coding for rare diseases - Wikipedia

    en.wikipedia.org/wiki/ICD_coding_for_rare_diseases

    Europe and other parts of the world use the ICD-10. The root codes for ICD-10 and ICD-10-CM are the same, making it helpful for locating codes for general body systems and disease processes. [2] [3] In ICD-11 the search and coding of any disease, including rare ones is done via the ICD-11 website. [4]

  6. Mitochondrial DNA depletion syndrome - Wikipedia

    en.wikipedia.org/wiki/Mitochondrial_DNA...

    It is associated with the mutations of mitochondrial genes in the nucleus and several genes including TK2, FBXL4, are known to be related to MDS. [11] Myopathic MDS is strongly correlated to a variety of mutations in the gene TK2, seeing a reduction of TK2 activity to less than 32% in people with MDS found with the mutation. Because TK2 plays a ...

  7. MTHFD1 - Wikipedia

    en.wikipedia.org/wiki/MTHFD1

    108156 Ensembl n/a ENSMUSG00000021048 UniProt P11586 Q922D8 RefSeq (mRNA) NM_005956 NM_001364837 NM_138745 RefSeq (protein) NP_005947 NP_001351766 NP_620084 Location (UCSC) n/a Chr 12: 76.3 – 76.37 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Methylenetetrahydrofolate dehydrogenase, cyclohydrolase and formyltetrahydrofolate synthetase 1 (MTHFD1) is a gene located in humans on ...

  8. 5,10-methenyltetrahydrofolate synthetase deficiency - Wikipedia

    en.wikipedia.org/wiki/5,10-methenyltetrahydrofo...

    5,10-Methenyltetrahydrofolate synthetase deficiency (MTHFS deficiency) is a rare neurodevelopmental disorder caused by mutations affecting the MTHFS gene, which encodes the enzyme 5,10-Methenyltetrahydrofolate synthetase. [2] The disease starts at birth or in early infancy and presents with microcephaly, short stature, and developmental delay.

  9. Hereditary haemochromatosis - Wikipedia

    en.wikipedia.org/wiki/Hereditary_haemochromatosis

    Haemochromatosis is protean in its manifestations, i.e., often presenting with signs or symptoms suggestive of other diagnoses that affect specific organ systems.Many of the signs and symptoms below are uncommon, and most patients with the hereditary form of haemochromatosis do not show any overt signs of disease nor do they have premature morbidity, if they are diagnosed early, but, more ...