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USMLE Step 1 Mnemonics Mnemonics, acronyms, reminders, and memorizing tips for the USMLE Step 1.

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Old 06-26-2014
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Default Autosomal dominant diseases and their corresponding chromosome

This is a Dr. Mnemosyne mnemonic, for more like these see Dr. Mnemosyne's tumblr: drmnemosyne(dot)tumblr(dot)com

The following mnemonic provides a quite useful list of some of the most common and relevant autosomal dominant diseases. But it even does more than that. As you list these 22 disease from memory it has the added beauty of listing them in chromosomal order, that is: the first is found on chromosome 1, the second is found on chromosome 2 etc. Also you might notice that most of these diseases cause structural problems, whereas autosomal recessive tend to be metabolic.

While knowing diseases for each chromosome isn’t terribly relevant clinically it can come in handy in the USMLE, and if nothing else, it sure is a cool party trick. Here goes:

Learn this 22-word limerick:

Hippo Ehler's fun hunting fetish

Made platypuses severely ticklish

Many asked why

Retarded hippos must pry

Nagged platypuses: My! Hippos are foolish

Recite it a few times, then get paper and list the words from memory:

Hippo - Hypokalemic periodic paralysis (type 1 on chromosome 1)

Ehler's - Ehler-Danlos Syndrome (type 3 and 4 on chromosome 2)

Fun (von) - von Hippel-Lindau disease (chromosome 3)

Hunting - Huntington's disease (chromosome 4)

Fetish - Familial adenomatous polyposis (chromosome 5)

Made - Vitelliform macular dystrophy (chromosome 6)

Platypuses - Polydactyly (multiple, yet mostly on chromosome 7)

Severely - Hereditary Spherocytosis (type 1 on chromosome 8)

Ticklish - Tuberous Sclerosis ("two hits", 1st on chromosome 9)

Many - Multiple Endocrine Neoplasia type 2 (chromosome 10)

Asked - Acute intermittent porphyria (chromosome 11)

Why - von Willibrand's disease (chromosome 12)

Retarded - Retinoblastoma (chromosome 13)

Hippos - Hypertrophic cardiomyopathy (common on chromosome 14)

Must - Marfan (chromosome 15)

Pry - AD Polycystic kidney disease (chromosome 16)

Nagged - Neurofibromatosis type 1 (chromosome 17)

Platypuses - Juvenile Polyposis hemorrhagic telangiectasia (chromosome 18)

My - Myotonic dystrophy (chromosome 19)

Hippos - Albright's Hereditary osteodystrophy (chromosome 20)

Are - Amyotrophic lateral sclerosis (chromosome 21)

Foolish - NeuroFibromatosis type 2 (chromosome 22)
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