By failing to follow informed consent protocols and regulations, a researcher engaging in CBPR may inflict permanent harm on the participating community and chill future research among disadvantaged populations.
It is unconstitutional--and unethical--for physicians to participate in evidence-gathering against pregnant women suspected of being addicted to illegal substances without informing them of their constitutional rights or gaining their informed consent.
Ownership rights to tissue donated for research end when the tissue leaves the body, as does all claim to benefit from commercial cell lines or other products derived from the tissue.