Monday 7 January 2019

Tutorial 7th. January 2019




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65
Julie Morris. Medical statistics
66
EMQ. Fragile X syndrome
67
Role-play Fragile X syndrome

65. Julie Morris. Medical statistics.

66. Fragile X Syndrome.
Fragile X syndromeAbbreviations.
FXS:               Fragile X syndrome
TR:                trinucleotide repeat
Question 1.
Lead-in
Which, if any, of the following are features of FXS in males?
Option List
A.       
autism
B.       
epilepsy
C.       
hyper-extensible joints
D.      
learning difficulty
E.       
post-pubertal macroorchidism

Question 2.
Lead-in
Which, if any, of the following are features of FXS in females?
Option List
A.       
autism
B.       
epilepsy
C.       
hyper-extensible joints
D.      
learning difficulty
E.       
post-pubertal ovarian enlargement
Question 3.
Lead-in
Why are women thought to be less affected by FXS than men?
Option List
A.       
two X chromosomes dilute the effect of affected X chromosome
B.       
leonisation
C.       
lionisation
D.      
lyonisation
E.       
none of the above
Question 4.
Lead-in
How common is FXS in males?
Option List
A.       
1 in 1,000
B.       
1 in 4,000
C.       
1 in 8,000
D.      
1 in 20,000
E.       
1 in 100.000
Question 5.
Lead-in
How common is FXS in females?
Option List
A.       
1 in 1,000
B.       
1 in 4,000
C.       
1 in 8,000
D.      
1 in 20,000
E.       
1 in 100.000
Question 6.
Lead-in
Which gene is implicated in the causation of FXS?
Option List
A.       
fragile X mental retardation 1
B.       
fragile X mitochondrial recognition 1
C.       
fragile X 1
D.      
the gene has not yet been identified
E.       
none of the above
Question 7.
Lead-in
Which is the leading hereditary cause of learning difficulty?
Option List
A
Down’s syndrome
B
fragile X syndrome
C
galactosaemia
D
homocystinuria
E
phenylketonuria
Question 8.
Lead-in
Which is the most common genetic cause of autism?
Option List
A.       
Down’s syndrome
B.       
fragile X syndrome
C.       
galactosaemia
D.      
homocystinuria
E.       
phenylketonuria
Question 9.
Lead-in
Which mode of inheritance occurs with FXS?
Option List
A.       
autosomal dominant
B.       
autosomal recessive
C.       
X-linked dominant
D.      
X-linked recessive
E.       
none of the above
Question 10.
Lead-in
What is the story about trinucleotide repeats and FXS. What are TRs? Which TRs are involved with FXS? How are TRs categorised in relation to FXS?
There is no option list – just write your answers.
Question 11.
Lead-in
What is the FXS premutation? What are its key associations?
There is no option list – just write your answers.

Candidate’s instructions.
You are a 5th. year SpR. It is a quiet day on the labour ward. There is a FY1 working on the labour ward who is keen to be an obstetrician. Your consultant is keen on teaching and has asked you to instruct the FY1 on the subject of Fragile X syndrome and linked issues.
FY1’s instructions.
You are a FY1 and very keen to be an obstetrician. You are eager to learn everything pertinent to the role, but have not heard of Fragile X syndrome.

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