Faculty Bibliography

Organ transplantation is limited due to the scarcity of donor organs. In order to expand the supply of organs for transplantation, interspecies chimeras have been examined as a potential future source of humanized organs. Recent studies using gene editing technologies in combination with somatic cell nuclear transfer technology and hiPSCs successfully engineered humanized skeletal muscle in the porcine embryo. As these technologies progress, there are ethical issues that warrant consideration and dialogue.

The need for organs to transplant is clear. Due to the lack of transplants, people suffer, they die, and the cost of taking care of them until they die is huge. There is general agreement that it would be good to increase the supply of organs in order to meet the demand for organ transplantation.

Public attention has been drawn recently to the commercial availability of noninvasive prenatal screening for rare genetic conditions, despite estimates that the positive predictive value of such tests is low. Many have focused on the importance of educating patients on the difference between screening and diagnostic testing so that they are adequately prepared for the possibility of a false-positive result. Even so, we question whether expanded noninvasive prenatal screening is ready to be used a screening tool. We argue that established public health criteria for evaluating the risks and benefits of a screening tool should be applied to expanded noninvasive prenatal screening. If a test fails to meet accepted standards, governmental agencies should consider regulating the accuracy and promotional claims of commercially available tests.