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Rotor syndrome (also known as Rotor type hyperbilirubinemia) [2] is a rare cause of mixed direct (conjugated) and indirect (unconjugated) hyperbilirubinemia, relatively benign, autosomal recessive [3] bilirubin disorder characterized by non-hemolytic jaundice due to the chronic elevation of predominantly conjugated bilirubin. [2]
CIPA is caused by a genetic mutation that prevents the formation of nerve cells responsible for transmitting signals of pain, heat, and cold in the brain. The disorder is inherited in an autosomal recessive fashion. [6] CIPA is caused by a mutation in NTRK1, [6] a gene encoding the neurotrophic tyrosine kinase receptor. [7]
The standard treatment regimen calls for 5–10 mg of biotin per day. [6] Biotinidase deficiency is inherited in an autosomal recessive pattern, which means the defective gene is located on an autosome, and two copies of the defective gene - one from each parent - must be inherited for a person to be affected by the disorder. The parents of a ...
Approximately 1 in 100,000 newborns will experience severe mucopolysaccharidosis type I, while approximately 1 in 500,000 newborns will experience attenuated mucopolysaccharidosis type I. [2] Most mucopolysaccharidoses are autosomal recessive disorders, meaning that only individuals inheriting the defective gene from both parents are affected ...
Certain other phenotypes, such as wet versus dry earwax, are also determined in an autosomal recessive fashion. [24] [25] Some autosomal recessive disorders are common because, in the past, carrying one of the faulty genes led to a slight protection against an infectious disease or toxin such as tuberculosis or malaria. [26]
Differences in residual enzyme activity of the various alleles account for the various degrees of severity of the disease. [136] [137] [138] Inheritance of all forms of 21-hydroxylase CAH is autosomal recessive, [4] except some mild disease-causing variants such as p.V281L that seem to exert dominant negative effects on enzymatic activity. [2]
Phenylketonuria is inherited in an autosomal recessive fashion. PKU is an autosomal recessive metabolic genetic disorder. As an autosomal recessive disorder, two PKU alleles are required for an individual to experience symptoms of the disease.
In medical genetics, compound heterozygosity is the condition of having two or more heterogeneous recessive alleles at a particular locus that can cause genetic disease in a heterozygous state; that is, an organism is a compound heterozygote when it has two recessive alleles for the same gene, but with those two alleles being different from each other (for example, both alleles might be ...