Presentation
[…] in ~80 % of cases) [ 14 ]; MIDD (m.3243A>G present in ~2–7 % of patients) [ 25 ]; LS [ 14 ]; Hypertrophic cardiomyopathy (m.3243A>G present in ~10 % of Finnish patients) [ 25 ]; Sensorineural hearing loss, focal segmental glomerulosclerosis, cardiac [basicmedicalkey.com]
Phenotype Varies in severity depending upon age of presentation and includes three main clinical presentations: 1) severe neonatal/early-childhood onset form presenting with cardiomyopathy, hepatic disease and hypotonia with high mortality in infancy, [ojrd.biomedcentral.com]
In most cases, mtDNA mutations are heteroplasmic as both normal and mutant mtDNA are present. [em-consulte.com]
(Wednesday, May 29th 3:30-5:30 pm) ClinGen Posters and Presentations - ACMG 2019 Gene Disease Validity General Training Presentation Updated February 2018. [clinicalgenome.org]
Avoid freeze / thaw cycle. pH: 8.00 Constituents: 0.0308% DTT, 0.316% Tris HCl, 10% Glycerol, 0.58% Sodium chloride Alternative names 2310020H20Rik HML hnifU see all Function Involved in the assembly or repair of the [Fe-S] clusters present in iron-sulfur [abcam.com]
Entire Body System
- Fatigue
UniProtKB/Swiss-Prot : 75 Myopathy with exercise intolerance Swedish type: Autosomal recessive metabolic disease characterized by lifelong severe exercise intolerance, in which minor exertion causes fatigue of active muscles, shortness of breath, and [malacards.org]
Agents/Circumstances to Avoid Avoid sustained fatiguing physical exertion. [ncbi.nlm.nih.gov]
Most patients are homozygous for the mutation with a phenotype characterized by a non-progressive myopathy with childhood onset of early fatigue, dyspnoea and palpitation on trivial exercise. [pubfacts.com]
This autosomal recessive metabolic disease is characterized by lifelong severe exercise intolerance, in which minor exertion causes fatigue of active muscles, shortness of breath, and cardiac palpitations in association with lactic acidosis. [abcam.com]
This symptom had progressed until she was unable to walk more than one block without extreme fatigue. She also had premature fatigue of masticatory muscles while eating. [nejm.org]
- Weakness
Affiliated tissues include testes and skeletal muscle, and related phenotypes are muscle weakness and myopathy OMIM : 57 Hereditary myopathy with lactic acidosis is an autosomal recessive muscular disorder characterized by childhood onset of exercise [malacards.org]
Increased acidity in the blood can lead to vomiting, abdominal pain, extreme tiredness (fatigue), muscle weakness, loss of bowel control, and difficulty breathing. [en.wikipedia.org]
A more severe phenotype with early onset of a slowly progressive severe muscle weakness, severe exercise intolerance and cardiomyopathy is caused by a missense mutation in compound with the intronic mutation. [pubfacts.com]
Muscle symptoms include myalgia, weakness, exercise intolerance and RM [ 57 - 61 ]. Muscle weakness may respond to riboflavin given orally. Cardiomyopathy may be seen in all forms [ 15 ]. [ojrd.biomedcentral.com]
They had early-onset severe muscle weakness and cardiomyopathy, features not reported in individuals homozygous for the common intronic variant. Life span. [ncbi.nlm.nih.gov]
- Short Stature
Bardet-Biedl syndrome 11 615988 602290 Autosomal recessive TRIM32 9q33.1 Muscular dystrophy, limb-girdle, type 2H 254110 602290 Autosomal recessive TRIM37 17q22 Mulibrey nanism 253250 605073 Autosomal recessive TRMT10A 4q23 Microcephaly, short stature [mnglabs.com]
Respiratoric
- Dyspnea
[…] muscle, and related phenotypes are muscle weakness and myopathy OMIM : 57 Hereditary myopathy with lactic acidosis is an autosomal recessive muscular disorder characterized by childhood onset of exercise intolerance with muscle tenderness, cramping, dyspnea [malacards.org]
Similarly, exercise ventilation is greatly exaggerated relative to metabolic rate, accounting for the prominence of exertional dyspnea [ Heinicke et al 2011 ]. [ncbi.nlm.nih.gov]
Cardiovascular
- Palpitations
/Swiss-Prot : 75 Myopathy with exercise intolerance Swedish type: Autosomal recessive metabolic disease characterized by lifelong severe exercise intolerance, in which minor exertion causes fatigue of active muscles, shortness of breath, and cardiac palpitations [malacards.org]
Most patients are homozygous for the mutation with a phenotype characterized by a non-progressive myopathy with childhood onset of early fatigue, dyspnoea and palpitation on trivial exercise. [pubfacts.com]
This autosomal recessive metabolic disease is characterized by lifelong severe exercise intolerance, in which minor exertion causes fatigue of active muscles, shortness of breath, and cardiac palpitations in association with lactic acidosis. [abcam.com]
Chest pain, pain in the arm, shortness of breath, sweating, nausea, heart palpitations Increasing prevalence, ~28.2% of all-cause mortality Mostly adult onset Bernard Soulier syndrome Hemorrhagi-thrombocytic dystrophy GP1BA, GP1BB, GP9 Easy bruising, [centogene.com]
Musculoskeletal
- Myopathy
Preferred Name Myopathy with Lactic Acidosis, Hereditary Synonyms Hereditary Myopathy with Lactic Acidosis ID http://purl.bioontology.org/ontology/MESH/C564972 altLabel Hereditary Myopathy with Lactic Acidosis Myopathy with Deficiency of ISCU Iron-Sulfur [purl.bioontology.org]
MalaCards based summary : Myopathy with Lactic Acidosis, Hereditary, also known as myopathy with exercise intolerance, swedish type, is related to myopathy with deficiency of iron-sulfur cluster assembly enzyme and leukemia, and has symptoms including [malacards.org]
Synonyms: Iron-Sulfur Cluster Deficiency Myopathy; Myopathy with Deficiency of Succinate Dehydrogenase and Aconitase; Myopathy with Exercise Intolerance, Swedish Type, MD, PhD and Ronald G Haller, MD. [ncbi.nlm.nih.gov]
614399 DNM2 Myopathy, centronuclear, 160150 MYF6 Myopathy, centronuclear, 3, 614408 CCDC78 Myopathy, centronuclear, 4, 614807 BIN1 Myopathy, centronuclear, autosomal recessive, 255200 CNTN1 Myopathy, congenital, Compton-North, 612540 ACTA1 Myopathy, [gsdseq.ir]
Prevention - Infantile myopathy and lactic acidosis Diagnosis - Infantile myopathy and lactic acidosis Prognosis - Infantile myopathy and lactic acidosis Treatment - Infantile myopathy and lactic acidosis Resources - Infantile myopathy and lactic acidosis [checkorphan.org]
- Muscle Weakness
Affiliated tissues include testes and skeletal muscle, and related phenotypes are muscle weakness and myopathy OMIM : 57 Hereditary myopathy with lactic acidosis is an autosomal recessive muscular disorder characterized by childhood onset of exercise [malacards.org]
Increased acidity in the blood can lead to vomiting, abdominal pain, extreme tiredness (fatigue), muscle weakness, loss of bowel control, and difficulty breathing. [en.wikipedia.org]
A more severe phenotype with early onset of a slowly progressive severe muscle weakness, severe exercise intolerance and cardiomyopathy is caused by a missense mutation in compound with the intronic mutation. [pubfacts.com]
Muscle symptoms include myalgia, weakness, exercise intolerance and RM [ 57 - 61 ]. Muscle weakness may respond to riboflavin given orally. Cardiomyopathy may be seen in all forms [ 15 ]. [ojrd.biomedcentral.com]
Symptoms may include muscle weakness, hypotonia, exercise intolerance, developmental delay, lactic acidosis, encephalopathy, hepatopathy, or myopathy. [basicmedicalkey.com]
- Muscle Cramp
[…] intolerance with muscle tenderness, cramping, dyspnea, and palpitations. [malacards.org]
cramps and RM [ 48, 49 ]. [ojrd.biomedcentral.com]
All five patients described uncomfortable tightness of masticatory muscles with prolonged chewing. The feeling of fatigue was accompanied by muscle cramps during exercise in four patients. [nejm.org]
Retinal arteries, tortuosity of 180000 120130 Autosomal dominant COL4A1 13q34 Schizencephaly 269160 120130 COL4A1 13q34 Angiopathy, hereditary, with nephropathy, aneurysms, and muscle cramps 611773 120130 Autosomal dominant COL5A1 9q34.3 Ehlers-Danlos [mnglabs.com]
- Muscle Spasm
Less commonly, people with MELAS may experience involuntary muscle spasms (myoclonus), impaired muscle coordination ( ataxia ), hearing loss, heart and kidney problems, diabetes, epilepsy, and hormonal imbalances. [en.wikipedia.org]
Prolonged muscle spasm (muscle contracture) is not uncommon and can lead to RM. [ojrd.biomedcentral.com]
- Muscle Tenderness
[…] intolerance with muscle tenderness, cramping, dyspnea, and palpitations. [malacards.org]
Neurologic
- Paresis
[…] disease, recessive intermediate, A 608340 606598 Autosomal recessive GDAP1 8q21.11 Charcot-Marie-Tooth disease, axonal, type 2K 607831 606598 Autosomal dominant; Autosomal recessive GDAP1 8q21.11 Charcot-Marie-Tooth disease, axonal, with vocal cord paresis [mnglabs.com]
Treatment
Prevention - Infantile myopathy and lactic acidosis Diagnosis - Infantile myopathy and lactic acidosis Prognosis - Infantile myopathy and lactic acidosis Treatment - Infantile myopathy and lactic acidosis Resources - Infantile myopathy and lactic acidosis [checkorphan.org]
Treatment of cultured fibroblasts derived from three homozygous patients with an antisense phosphorodiamidate morpholino oligonucleotide for 48 h resulted in 100% restoration of the normal splicing pattern. [pubfacts.com]
It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. [uniprot.org]
Consult your personal physician or other professional health care provider when seeking individualized treatment regarding your medical diagnosis or condition. [varsome.com]
The analysis and interpretation of a patient’s nuclear mitochondrial exome is valuable for obtaining a definitive diagnosis, estimating prognosis, guiding treatment choices, and determining recurrence risks. [nextgenerationsequencing.info]
Prognosis
Prevention - Infantile myopathy and lactic acidosis Diagnosis - Infantile myopathy and lactic acidosis Prognosis - Infantile myopathy and lactic acidosis Treatment - Infantile myopathy and lactic acidosis Resources - Infantile myopathy and lactic acidosis [checkorphan.org]
The analysis and interpretation of a patient’s nuclear mitochondrial exome is valuable for obtaining a definitive diagnosis, estimating prognosis, guiding treatment choices, and determining recurrence risks. [nextgenerationsequencing.info]
You can help by adding to it. ( August 2017 ) Treatment/prognosis [ edit ] Patients are managed according to what areas of the body are affected at a particular time. Enzymes, amino acids, antioxidants and vitamins have been used. [en.wikipedia.org]
Patients have increased LDL values from birth, and an increased cardiovascular risk, making early diagnosis and treatment imperative for improved prognosis. Three main causative genes have been associated with FH: LDLR, APOB and PCSK9. [clinicalgenome.org]
According to the data so far, having a percentage of mutant mtDNA 30% or > 80% is predictive of a reasonable chance of a good or bad prognosis, respectively [ 103 ]. Any results in between these limits would be of even less certain predictive value. [em-consulte.com]
Etiology
Diverse etiologies (Figure 1 ) implicated in acute RM share a common final pathway, increased intracellular free ionized calcium, leading to muscle cell death through the activation of a number of detrimental mechanisms such as enzymatic activation and [ojrd.biomedcentral.com]
Epidemiology
Relevant External Links for ISCU Genetic Association Database (GAD) ISCU Human Genome Epidemiology (HuGE) Navigator ISCU Atlas of Genetics and Cytogenetics in Oncology and Haematology: ISCU No data available for Genatlas for ISCU Gene Distinct iron-sulfur [genecards.org]
The administration of L-arginine during the acute and interictal periods may represent a potential new therapy for this syndrome to reduce brain damage due to impairment of vasodilation in intracerebral arteries due to nitric oxide depletion. [9] [10] Epidemiology [en.wikipedia.org]
The epidemiology of pathogenic mitochondrial DNA mutations. Annals of Neurology. 48 : 188-193. Chinnery, PF; Johnson, MA; Wardell, TM; Sing-Kler, R; Hayes, C; Brown, DT; Taylor, RW; Bindoff, Laurence; Turnbull, DM. 2000. [uib.no]
Pathophysiology
For further information on the Pathophysiology of this condition, see Molecular Genetic Pathogenesis. [ncbi.nlm.nih.gov]
Contribution to the pathophysiology of the disease. J Inherit Metab Dis 2013;36:841-7. 12. Tort F, Ferrer-Cortès X, Thió M, Navarro-Sastre A, Matalonga L, Quintana E, et al. [neurologyindia.com]
This new understanding of the molecular basis of PCL pathophysiology should contribute to a better definition of the phenotypic spectrum and provide critical information to develop potential therapeutic strategies for PCL. [ng.neurology.org]
The syndrome of rhabdomyolysis: pathophysiology and diagnosis. Eur J Intern Med. 2007;18(2):90–100. PubMed Google Scholar Jhawar M, George P, Pawar B. [ojrd.biomedcentral.com]
Mitochondrial disorders: from pathophysiology to acquired defect. Springer. Se fullstendig oversikt over publikasjoner i CRIStin. [uib.no]
Prevention
Prevention - Infantile myopathy and lactic acidosis Diagnosis - Infantile myopathy and lactic acidosis Prognosis - Infantile myopathy and lactic acidosis Treatment - Infantile myopathy and lactic acidosis Resources - Infantile myopathy and lactic acidosis [checkorphan.org]
Prevention of primary manifestations: Anecdotal evidence suggests that episodes of rhabdomyolysis and myoglobinuria may be prevented by avoiding sustained fatiguing physical exertion. [ncbi.nlm.nih.gov]
The work is done at night time to prevent a service interruption. The work is scheduled to take place between 9:35 pm Tuesday January 29 and 5:30 am Wednesday January 30. All efforts […] Pruning, Grow Lights, #*!#*@#! [saltspringexchange.com]
Clinical Actionability Tools Clinical Actionability tools support the curation process is to identify those human genes that, when significantly altered, confer a high risk of serious disease that could be prevented or mitigated if the risk were known [clinicalgenome.org]
These myopathies are typically subdivided into three categories: i) glycogen storage diseases, ii) lipid storage diseases and iii) disorders of purine metabolism, all of which are associated with specific enzymatic defects that prevent adequate energy [blueprintgenetics.com]