A test for the polymorphism would be technically feasible, “just a simple sequencing thing,” he says. But consent of the people who are tested would be required.

“It is still a big question what makes a difference,” he says in conclusion. “And polymorphisms like the one we described may be part of the answer. It is probably not as simple as to say that it is in a single receptor; it is in a full spectrum of different receptors that make people more or less susceptible.”

My guess is that I don’t have this polymorphism, because Byetta is working so well for me. I hope that you don’t have it either.

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