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Genetic Disorders and the Fetus


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X‐linked disorders, maternal “culpability” is real and not easily assuaged. The fact that we all carry harmful genes, some of which we may have directly inherited, while others may have undergone mutation, will need in‐depth discussion. Mostly, it is possible and important to reassure mothers that the outcome was not due to something they did wrong. Where the converse is true, much effort will be needed for management of guilt1030 and shame, and for planning actions that promise a better future with ways to avert another adverse outcome.

      The surviving children

      Distraught parents frequently seek advice about how to tell their other children. Responses should be tailored to the age of the child in question, to the child's level of understanding, and against a background of the religious and cultural beliefs of the family. A key principle to appreciate is that having reached the stage of cognizance regarding the loss, a child needs and seeks personal security. Hence, the parents' attention should be focused on love, warmth, and repetitive reassurance, especially about (possibly) unstated feelings of previous wrongdoing and personal culpability. Advice about grieving together instead of being and feeling overwhelmed in front of their children is also helpful. Focusing on the children's thoughts and activities is beneficial rather than lapsing into a state of emotional paralysis, which can only serve to aggravate the family's psychodynamics adversely.

      Genetic counseling is a communication process that aims to achieve as complete an understanding by the counselee(s) as possible, thereby enabling nondirective rational decision making. Studies examining the efficacy of genetic counseling in various settings and using different modalities (e.g. telephone versus in‐person) and self‐efficacy of genetic counselors and students continue.10381041 Anxiety, distress, uncertainty, guilt, decisional conflict, and a deficient knowledge of science, together with difficulty in understanding a balance of risks, influence the ultimate efficacy of genetic counseling. Parental decisions to have additional affected progeny should not be viewed as a failure of genetic counseling. Although the physician's goal is the prevention of genetic disease, the orientation of the prospective parents may be quite different. A fully informed couple, both of whom had achondroplasia, requested prenatal diagnosis with the expressed goal of aborting a normal unaffected fetus so as to be able to raise a child like themselves. Would this be construed as a failure in genetic counseling? Would continued pregnancy with an anencephalic fetus after genetic counseling be considered a failure of genetic counseling?

      Evaluation of the efficacy of genetic counseling should not only include the degree of knowledge acquired (including the retention of the counselee(s) with regard to the indicated probabilities), the rationality of decision making (especially concerning further reproduction), but also the potential personal influences outlined in the Netherlands' study. Frequent contraceptive failures in high‐risk families highlight the need for very explicit counseling. A further measure of efficacy is the frequency and accuracy of a proband's communication of important risk information to close relatives. It appears that communication of test results may be selective, with male relatives and parents less likely to be informed.1044

      Important points made by Emery et al.1045 in their prospective study of 200 counselors, included the demonstrated need for follow‐up after counseling, especially when it is suspected that the comprehension of the counselee(s) is not good. This seemed particularly important in chromosomal and X‐linked recessive disorders. They noted that the proportion deterred from having children increased with time and that more than one‐third of their patients opted for sterilization within 2 years of counseling.

      A number of studies10451048 document the failure of comprehension by the counselee(s). Such failures are increasingly likely with genome sequencing resulting in secondary findings and revelations of unknown significance.1048 The reports do not reflect objective measures of the skill or adequacy of genetic counseling and the real value of a summary letter to