Patel Nayana, Bhadarka Harsha K, Vaniawala Salil, Patel Arpita
Department of IVF, Akanksha Hospital and Research Institute, Anand, India.
Department of Genetic, S N Gene Lab, Surat, Gujarat, India.
J Hum Reprod Sci. 2020 Jul-Sep;13(3):245-248. doi: 10.4103/jhrs.JHRS_38_19. Epub 2020 Oct 27.
In recent years, Preimplantation genetic testing for monogenic disorders (PGT-M) has gained a lot of focus in the field of assisted reproduction technology, various studies have been published in support of it and many are opposing its role. It has been criticized due to many ethical as well as scientific reasons, but there is no doubt that PGT-M has been one of the most important breakthroughs in fertilization. A critical aspect of this technology is the possibility that the biopsy itself can adversely affect the quality of embryo and compulsion of embryo freezing. Oculocutaneous albinism (OCA) is a condition which is related to skin, hair, eye color (pigments), where affected individuals typically have very fair skin and white- or light-colored hair. These patients are prone to skin cancers on prolonged sun exposure. It also reduces the pigmentation of the colored part of the eyes (the iris) and the light-sensitive tissue at the back of the eye (the retina). People with this condition usually have problem in vision such as reduced sharpness, involuntary eye movements, and photophobia. Here, we report the successful use of PGT-M and a novel protocol for the preimplantation genetic diagnosis of OCA following trophectoderm cell biopsy from blastocysts and the birth of a healthy infant to a couple having previously affected child.
近年来,单基因疾病植入前基因检测(PGT-M)在辅助生殖技术领域备受关注,已有多项研究支持该技术,但也有许多研究反对其作用。由于诸多伦理和科学原因,它受到了批评,但毫无疑问,PGT-M是受精领域最重要的突破之一。该技术的一个关键问题是活检本身可能会对胚胎质量产生不利影响,以及胚胎冷冻的必要性。眼皮肤白化病(OCA)是一种与皮肤、头发、眼睛颜色(色素)有关的疾病,患者通常皮肤白皙,头发为白色或浅色。这些患者长期暴露在阳光下易患皮肤癌。它还会减少眼睛有色部分(虹膜)和眼睛后部感光组织(视网膜)的色素沉着。患有这种疾病的人通常有视力问题,如视力清晰度下降、不自主眼球运动和畏光。在此,我们报告了PGT-M的成功应用以及一种新的方案,该方案用于在对囊胚滋养外胚层细胞进行活检后对OCA进行植入前基因诊断,并且一对曾育有患病子女的夫妇诞下了一名健康婴儿。