Alfa Thalassemia Trait Mnemonic - USMLE Forums
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USMLE Step 1 Mnemonics Mnemonics, acronyms, reminders, and memorizing tips for the USMLE Step 1.

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Old 08-29-2009
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RBC Alfa Thalassemia Trait Mnemonic

Two genotypes of the two alfa chain deletions
cis configuration --/aa Common in Asians
trans configuration -a/-a Common in African Americans

To remember these remember that:
  • cis configuration implies a horizontal orientation just like the wide horizontal Asia continent
  • trans configuration implies vertical orientation just like the tall and narrow African continent

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