Yusuke Mitani

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The Say-Barber-Biesecker-Young-Simpson variant of Ohdo syndrome (SBBYSS) (MIM# 603736) and genitopatellar syndrome (GPS) (MIM#606170) are allelic diseases caused by KAT6B mutation. Genotype-phenotype correlation is assumed, but a few patients manifest overlapping features of both syndromes. Here we report the case of a boy with SBBYSS. He had a KAT6B(More)
Metachromatic leukodystrophy (MLD) is an autosomal recessive lysosomal storage disease caused by deficiency of the enzyme arylsulfatase A encoded by the ARSA gene located on 22q13.33. Typically, in autosomal recessive disease, a patient inherits two mutations from both parents who are heterozygous carriers. However, in some instances, it is possible to(More)
Establishing a simple and effective mutation screening method is one of the most compelling problems with applying genetic diagnosis to clinical use. Because there is no reliable and inexpensive screening system, amplifying by PCR and performing direct sequencing of every coding exon is the gold standard strategy even today. However, this approach is(More)
Tuberous sclerosis complex (TSC) is an autosomal dominant disorder characterized by multiple hamartias and hamartomas involving throughout the body. To date, many TSC1 and TSC2 mutations have been reported all over the world, however, few TSC mutation studies have been performed in the Japanese population, and genetic characteristics of Japanese TSC(More)
BACKGROUND Infantile neuronal ceroid lipofuscinosis (INCL) is an autosomal recessive disorder starting in infancy as early as 12-month-old, caused by PPT1 (palmitoyl-protein thioesterase 1) mutations, and characterized by progressive psychomotor deterioration, brain atrophy, myoclonic jerk and visual impairment. INCL can be diagnosed by brain magnetic(More)
In current practice of clinical genetics, molecular diagnosis has become more widely used than ever before. DNA diagnosis is important for appropriate medical care of the patient, and proper genetic counseling to the family. However, genetic testing of orphan disease cannot always be performed easily. In multiple congenital anomalies (MCA) syndromes by(More)
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