NMDs: Neuropathies | Baamboozle - Baamboozle | The Most Fun Classroom Games!

You are preparing for a preconception genetic counseling session. The couple being of ____ ancestry might lead you to talk about Riley-Day syndrome as a condition that they may want to know their carrier status for

Ashkenazi Jewish ancestry- 1/36 carrier rate

Your patient asks you to explain what 'peripheral neuropathy' means, because they've heard the term but don't understand it. What might you say?

____ can be caused by a deletion of PMP22, whereas ____ is caused by a duplication

CMT, HNPP

Your patient asks you to explain what 'palsy' means, because they've heard the term but don't understand it. What might you say?

A broad term for a paralysis, or partial or full inability to move certain muscles, that often comes alongside weakness and uncontrolled movements like shaking

What, if any, of the following are associated with a decreased life expectancy? Charcot Marie Tooth, Hereditary Neuropathy with Liability to Pressure Palsies, Familial Dysautonomia

Familial Dysautonomia progression is associated with decreased life expectancy

What is a hammer toe? Describe what it might look like, and a condition that you would put on the differential if neural damage signs were also present.

A hammer toe is a condition that causes the 2nd (sometimes 3rd, and/or 4th) toe to be bent/curl downward at the middle joint. This is a feature of CMT

In which of the following scenarios would information about why they were referred decrease your suspicion of a peripheral neuropathy that we have discussed in class (CMT, HNPP, FD)

c) A 3 month old was born with severe hypotonia, and scoliosis... these are indicative of a congenital myopathy

What is the inheritance pattern for Familial Dysautonomia?

autosomal recessive

What is the inheritance pattern for Hereditary Neuropathy with Liability to Pressure Palsies?

autosomal dominant

Provide an example of how damage to each of the following nerves could present for an individual with a peripheral neuropathy: sensory nerve damage symptom, motor nerve damage symptom, autonomic nerve damage symptom

Possible answers

How are subtypes of Charcot-Marie-Tooth currently identified?

b) Molecular diagnostics: Single-gene testing for PMP22 with duplication/deletion analysis is recommended first, usually followed by a multigene panel if normal

Which of the following is not a primary feature of Charcot Marie Tooth?

b) progressive loss of vision

Which of the following might be the earliest indication that a newborn has Familial Dysautonomia?

d) The newborn does not have the expected bumps on their tongue (fungiform papillae)

Which of the following findings is the strongest indicator of a neuropathy?

c) A low nerve conduction velocity reading

Familial dysautonomia is an example of

a) A hereditary sensory and autonomic neuropathy

Describe at least 3 ways that we might distinguish the presentation of a myopathy from the presentation of a peripheral neuropathy– think about timing, symptoms, senses, distribution, bloodwork, etc...

Possible answers-- there may be more!

A podiatrist refers a patient to you because they and are affected by slowly worsening foot drop, high-arched feet, hammer toes, and sensory loss. They are also a member of the Deaf community, which increases your suspicion of:

a) XL inheritance of a GJB1 duplication-- this pathology leads to an X-linked form of CMT that is also associated with deafness and CNS symptoms

What is the most common molecular cause of autosomal dominantly inherited Charcot Marie Tooth Hereditary Neuropathy?

duplication of a peripheral myelin protein gene on 17q- PMP22