Try this:

IF(OR(AND(LEFT(A1,1)="7",LEFT(C1,1)="A"),LEFT(C1,1 )="T",LEFT(C1,1)="G"),A1&B1&C1,"")

Does that help?
***********
Regards,
Ron

XL2002, WinXP


"Jan Buckley" wrote:

I need to create a formula that says IF LEFT(A1,1)="7" AND LEFT(C1,1)="A" OR
LEFT(C1,1)="T" OR LEFT(C1,1)="G", THEN CONCATENATE(A1,B1,C1)

I don't know if I can use AND and OR in the same formula, or how to string
it all together. Help, please. Thank you.