What is the meaning of the string (*) when writing a single nucleotide polymorphism?

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Mohammad Yaser Abajy

Hello Suzanne,

The symbol * indicates the type of allele, there are 26 allelic variants in CYP3A4 currently described, the majority have not been shown to alter CYP3A4 activity. for example allele CYP3A4*26 has T in position 17633 instead of C.

Katie A S Burnette

Article The CYP3A4*22 C>T single nucleotide polymorphism is associat...

It's the name of the allele variant

Frederic Lepretre

Article CYP3A4*22: Promising newly identified CYP3A4 variant allele ...