博元婦產科胚胎篩檢 訂做優生寶寶 博元院長蔡鋒博說,有一對美國結婚 6年的夫妻做了多次的試管嬰兒都未成功,因此台籍老婆帶著美國籍老公回台到博元求診,配合彰基基因部開發技術,成功懷孕,兩夫妻昨在美國以視訊和媒體記者分享喜訊。另有 5對懷孕夫妻到現場慶祝懷孕成功。 《2014/12/10 16:29》 http://care.cdns.com.tw/20141211/med/yybj/820020002014121016295839.htm 受惠於博元婦產科胚胎篩檢不良基因胚胎懷孕成功的多對夫妻昨日一起分享喜悅。(記者曾厚銘攝) 記者曾厚銘/彰化報導 彰基醫院基因醫學部結合聚酶連鎖反應儀及基因晶片掃描儀, 1天即可完成新鮮胚胎檢驗,並找出最健康的胚胎植入子宮。彰基和博元婦產科合作,順利讓 5名婦人懷孕,昨日 5對夫妻開心到彰基分享喜悅。 彰基遺傳部主任陳明說,這種篩檢健康胚胎技術,台灣技術已跟上美國腳步,目前已有 200多例,除台灣患者外,也有美國及大陸人士來台接受治療懷孕成功。,這種新快篩健康胚胎方法,目前只應用在人工生殖及試管嬰兒上。 博元婦產科 院長蔡鋒博說,有一對美國結婚 6年的夫妻做了多次的試管嬰兒都未成功,因此台籍老婆帶著美國籍老公回台到博元求診,配合彰基基因部開發技術,成功懷孕,兩夫妻昨在美國以視訊和媒體記者分享喜訊。另有 5對懷孕夫妻到現場慶祝懷孕成功。 陳明表示,當受精卵胚胎到第 5天時,即可切片取樣,透過儀器及人工判讀,只要 1天,即可篩檢出最健康胚胎,再植入子宮,除可以提高著床率,並因已篩檢掉部分已知的罕見疾病帶因胚胎,因此生下優生寶寶機率大增。
- Feb 12 Thu 2015 16:21
博元婦產科胚胎篩檢 訂做優生寶寶
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- 2015: RMANJ紐澤西團隊的 次世代定序 NGS 研究 nexgen 新鮮胚胎植入的時代已經來臨,冷凍胚胎時代已經過去 RMANJ LAUNCHES NEXGEN CLINICAL TRIAL; NEXT GENERATION SEQUENCING APPROACH TO IN VITRO FERTILIZATION (IVF) 在2014年去年2月10日首先RMANJ他們進行了一個200個人試管嬰兒次世代定序臨床的研究, 這是一個雙盲的研究,實驗組是植入兩個經過次世代定序的胚胎, 而對照組是外觀選擇的胚胎, 次世代無疑它的好處是快速, 最重要的是很便宜, 在之前紐澤西團隊他們是是用qPCR來進行胚胎切片,植入兩個胚胎獲得84.7%的活產率, 他們仍然認為CCS應該可以 更精準或更便宜一些, 所以2014年2月進行了一個次世代定序的臨床研究, 有關RMANJ紐澤西團隊他們在1999年成立至今, 已經誕生3萬個試管寶寶, 在2013年ASRM美國生殖醫學會有發表28篇的學術論文, 他們最為人稱讚的是不斷的開發新的技術, 使用qPCR24染色體選胚胎植入胚胎:快速新鮮胚胎植入, 所以他們最近在美國不孕症與醫學期刊發表一份看法就是, 基於7個理由(見以下參考):CCS新鮮胚胎植入的時代已經來臨,而冷凍胚胎這個時代已經過去, RMANJ試管嬰兒中心更奇怪和有趣的觀察是, 他們直接跳過不使用a-CGH去進行胚胎篩檢, 而從SNP技術跳到qPCR技術再一躍跳到NGS, 而直接跳過a-CGH, 這真的很有趣很值得玩味的一個發現,是不是代表a-CGH: (1)a-CGH在篩檢胚胎太過精準以至於會"誤棄"胚胎。 (2) a-CGH是太繁瑣要冷凍胚胎,使他們讓病人花費冷凍胚胎的費用, a-CGH的晶片費用非常的昂貴,一個胚胎切片在台灣估價要1萬8000元,這對病人來講是很大的負擔, 我們持續觀察美國紐澤西團隊次世代定序這200個研究NGS 統計的的活產率著床率報告, 應該會優於兩個胚胎的qPCR的84.7%的活產率。 參考: REF:: CCS不必冷凍胚胎,如王寶釧苦守寒窰18年等報告!qPCR CCS 新鮮胚胎植入的 "7大" 理由,根據RMANJ紐澤西團隊斯考特Scott的論述,在生育與節育期刊提出 7大鐵證 ,證明進行CCS不用冷凍胚胎,新鮮胚胎植入就大可進行,理由有: (1)因為CCS的正確性和有效性可以大幅提高成功率和胚胎著床率。 (2)提高試管嬰兒成功率是最大的考慮,而胚胎染色體異常比率從25%增加到40歲之後的85%,這使得更需要做CCS。 (3)因為CCS的費用實在是很昂貴,也因此能夠讓病人少錢就是一個patient center care,因此是不是能夠減少病人冷凍胚胎的費用呢? (4)使用CCS可以減少多胞胎的比率,因為染色體正常就可以進行單一胚胎植入,進行BEST也就是所謂的囊胚期染色體正常單一胚胎植入。根據研究單胞胎和雙胞胎小孩子的體重,單胞胎會比雙胞胎增加650公克。 (5)冷凍胚胎其實是不可以不用的,因為有CCS之後會有單一胞胎植入,單一胚胎植入之後會有冷凍胚胎,這個冷凍胚胎的對象是染色體正常的胚胎。 (6)有一些病人並不能從CCS得到好處,只有部分的病人,比如根據RCT三份的研究發現,如果說打針病人年紀大,取卵數少,AMH低,或者是形成囊胚期胚胎率低,這個做CCS並沒有得到好處。 (7)能夠進行CCS一定要: 1.進行囊胚期胚胎培養、 2.能夠進行胚胎切片、 3.能夠進行快速冷凍的方法。 因此這三大要件都存在的實驗室,才能夠進行CCS新鮮胚胎植入,並不是每一家試管嬰兒中心都有這3個技術這個能力,因此他提出因為有這個7大理由的時機已經成熟, 也因此 進行胚胎全基因放大檢測胚胎的染色體, 進行胚胎的植入"新鮮"胚胎植入,妳不必再冷凍胚胎苦苦等報告了,這一份的學士論文是登在生育與節育期刊2014年9月份。 參考: Comprehensive chromosome screening with synchronous blastocyst transfer: time for a paradigm shift* Recently, the nature of assisted reproductive technology (ART) laboratory investigation has been shifting. Tradition- ally, it has focused on optimizing the culture milieu or assur- ing fertilization; now, a variety of new technologies are available to assess the reproductive potential of individual embryos. Perhaps most prominent has been the resurgence of embryonic aneuploidy screening. The validation of 24-chromosome testing platforms has led to a variety of studies demonstrating higher implantation and delivery rates. These findings are now translating to changes in the para- digm of ART practice. Caution is prudent in times of change, and methodical analyses are needed. Evaluation logically focuses on efficacy in terms of enhanced implantation and delivery rates. Other factors, such as safety, cost, and accessibility also deserve thoughtful consideration. Evaluations of these endpoints should take into account the caliber of the data supporting the ‘‘new paradigm,’’ in parallel with the data supporting the current ‘‘standard of care,’’ and both should be evaluated with the same level of rigor. Several investigators have recently expressed concerns about the implementation of comprehensive chromosomal screening (CCS) in clinical practice. Fortunately, an ever- growing literature is available to provide clinicians and scien- tists with the information they need to evaluate many of the critical issues. Some of the major issues and questions include: 1. Efficacy of 24-chromosome embryonic aneuploidy screening. Multiple studies provide class I data demon- strating higher implantation and delivery rates following 24-chromosome aneuploidy screening. In distinct contrast to fluorescent in-situ hybridization-based preimplantation genetic screening studies in which every randomized controlled trial (RCT) showed either no improvement or active detriment, every RCT involving 24-chromosome screening has demonstrated benefit (1–3). 2. What magnitude of improvement in clinical outcomes is necessary to justify screening? Answering this question inevitably involves a subjective decision that will be made by patients after counseling by the clinicians caring for them. Given that aneuploidy rates vary from 25% in women in their late twenties to 85% for those in their mid-forties, the opportunity for enhancing outcomes will be greatly affected by the age of the female partner and her intrinsic ovarian responsiveness. It is unlikely that im- provements will be made in direct proportion to the aneu- ploidy rate, as many other factors affect delivery rates. Women with high embryonic arrest rates are unlikely to attain the full benefit of screening. Still, the magnitude of the enhanced outcomes seen in the RCTs is substantial. 3. The cost of CCS may be burdensome. Although substantial costs are associated with CCS, even in proportion, they are * This is an open access article under the CC BY-NC-ND license (http:// would appear that this type of screening is appropriate creativecommons.org/licenses/by-nc-nd/3.0/). 660 VOL. 102 NO. 3 / SEPTEMBER 2014 lower than the costs of additional ART cycles. A definitive cost-effectiveness study has not been published to date. Although enhanced delivery rates should translate to fewer treatment cycles, that question must await more detailed analyses before conclusions may be drawn. Additionally, savings attributable to decreased pregnancy losses and the care provided to ongoing aneuploid gestations would need to be considered. Given that, and the impact on transfer or- der discussed below, it is unlikely that cost effectiveness will limit implementation of embryonic aneuploidy screening. 4. Implementation of CCS may actually increase the risk for multiple gestations unless transfer order is reduced. That very fact has already been established in a randomized controlled trial (2). In fact, it is a mathematical certainty. As implantation rates increase, if there is no decrease in transfer order, then multiple gestation rates will inevitably rise. However, it is not reasonable to assume that transfer order would remain the same. For the first time, there are class I data demonstrating eSET after CCS is as effective as double-embryo transfer of unscreened embryos (2). All prior RCTs comparing elective single-embryo transfer (eSET) versus double-embryo transfer found poorer per- transfer outcomes with eSET. If CCS is used, that is no longer true. Equivalent delivery rates are maintained while virtually eliminating the risk of twins. The paradigm using CCS and eSET produced an average gain in birth weight of approximately 650 grams. No other single intervention in obstetrics has produced such a dramatic enhancement in birth weight, which is known to be highly correlated with the health of the child. Of course, the transfer of two screened embryos would further increase pregnancy rates, but at the cost of quite elevated twin rates; thus, it should be discouraged. Armed with these data, utilization of eSET in our program has risen from less than 6% to approximately 60% over a 4-year interval. 5. Embryo cryopreservation is essential to the application of CCS. This is an excellent point, as it is true in many, but not all, programs. Analyses can be completed in as little as 4 hours, and several programs now have testing labora- tories within their facilities. However, that may not be necessary. Data from RCTs demonstrate equivalent deliv- ery rates following the transfer of fresh or vitrified CCS screened blastocysts (2). Furthermore, data now demon- strate meaningfully better obstetrical outcomes in concep- tions following the transfer of cryopreserved embryos. 6. Some subpopulations may not benefit from aneuploidy screening. The studies to date have focused on infertile normal responders. No class I data address the impact of CCS in women who are low responders or have recurrent pregnancy loss. An RCT to determine the impact of CCS in women at risk for low response to gonadotropin stimu- lation has been registered (NCT01977144) and is currently underway. Within the general ART population, individuals who might typically be considered candidates for two- embryo transfer should be offered CCS. Given that the eSET rate was 8.8% in the recently released 2012 Society for Assisted Reproductive Technology (SART) data, it Fertility and Sterility® for very large numbers of patients. Even those patients who desire eSET attain increased delivery rates if the euploid embryos are selected for transfer. Although many of these patients already have excellent delivery rates, it is difficult to imagine a scenario in which the in- creases in implantation rates seen in the RCTs done to date would not be a compelling reason to screen. 7. The need to culture to the blastocyst stage to safely biopsy em
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