Probably donating a chunk of tumor would be more informative than a blood donation, but there is the question of wanting to save the tumor block from being slowly hacked away to nothing, since over time as they discover more things like p53 having some tumor block left might be pretty precious...
But I'm currently in the Breast Cancer Early Detectoin Study, which is using blood samples from breast cancer patients, to try to find a better marker. And I wonder if blood sampling from HER2support members might have some usefulness.
It would be really nice to meet others in person.
A.A.
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