Can performing PGS/PGT-A/CCS cause damage to the future baby?

No. PGS/PGT-A/CCS is performed by biopsying the group of cells that will produce the amniotic sac and placenta (trophectoderm), while the cells that will produce the future baby (inner cell mass) remain untouched. In this way, the possible deleterious effect that PGS/PGT-A/CCS could cause on the embryo or the future baby becomes inexistent.