Genetic Disorders, Misc + CDB Flashcards
Ataxia, nystagmus, kyphoscoliosis, pes cavus
Friedreich ataxia
Friedrich ataxia, gene affected
Frataxin
Friedrich ataxia, chromosome
9
MC congenital neuropathy
Charcot-Marie-Tooth Disease (CMT)
Hammer toes
Charcot-Marie-Tooth Disease (CMT)
Peroneal muscular atrophy, foot drop, high-arched foot, stork legs
Charcot-Marie-Tooth Disease (CMT)
Genetic disease classification in which every generation in the population is affected
Autosomal dominant
Genetic disease classification in which every generation in the population is affected that skips generations (often grandparents has had a similar condition
Autosomal recessive
Genetic diseases whose risk is increased by consanguinity
Autosomal recessive
Genetic disease classification in which only males are affected; females are unaffected or only partially affected (due to lyonization) carriers of the trait
X-linked recessive
A neurocutaneous syndrome affecting many organs, including the cerebellum, spinal cord, medulla, retina, kidneys, pancreas, and epididymis
von Hippel–Lindau Disease
von Hippel–Lindau Disease, major neurologic manifestations
1) Cerebellar hemagioblastomas 2) Retinal angiomata
Most common cause of death associated with von Hippel–Lindau disease
Renal cell CA
MC kidney CA
Clear cell CA
Telangiectasia
Ataxia
Variable immunodeficiency
Autosomal recessive
Ataxia telangiectasia
Earliest site of telangiectasia in ataxia–telangectasia
Bulbar conjunctivae
Choreoathetosis, progressive cerebellar ataxia, chronic sinopulmonary infection, increased risk of malignancy
Ataxia telangiectasia
Elevated in serum of patients with ataxia telangiectasia
α-fetoprotein + carcinoembryonic antigen
Microcephaly is defined as
Head circumference > 3 standard deviations below the mean
Macrocephaly is defined as
Head circumference > 3 standard deviations above the mean
Microcephaly, mental retardation, high-pitched
crying likened to that of a meowing kitten
Cri du chat syndrome
Cri du chat syndrome, Mutation
Deletion of 5p (short arm of chromosome 5)
Male hypogonadism due to the presence of two or more X chromosomes and one or more Y chromosomes
Klinefelter syndrome
Most common genotype of Klinefelter
47 XXY (meiotic nondisjunction)
Hormonal derrangement in Klinefelter
Increased level of follicle-stimulating hormone
(FSH) and LH decreased level of testosterone
T/F Klinefelter syndrome, most have normal intelligence
T
T/F Klinefelter syndrome, increased risk for breast carcinoma
T
T/F Klinefelter, sterility
T
Klinefelter habitus
Eunuchoid
Risk factor for Klinefelter
Advanced maternal age