‘Three pa­rent’ ba­by born using new tech­ni­que

Times of Suriname - - ENGELS -

USA - A boy with three ge­ne­tic pa­rents be­ca­me in April the first in­fant born using a con­tro­ver­si­al new me­thod that re­lies on DNA from two wo­men and one man, ac­cor­ding to New Scien­tist.

A team of U.S.-ba­sed doc­tors per­for­med the pro­ce­du­re in Mexi­co for a Jor­da­ni­an cou­ple, who op­ted for the pro­ce­du­re to pre­vent their child from de­vel­o­ping a fa­tal di­sea­se car­ried by his mo­ther. Em­bry­o­lo­gists be­lie­ve the tech­ni­que, not yet ap­pro­ved in the Uni­ted Sta­tes, could us­her a new wa­ve of de­vel­op­ments in me­di­ci­ne around the world, the ma­ga­zi­ne re­por­ted.

The child’s mo­ther car­ries the ge­nes for Leigh Syn­dro­me, a fa­tal dis­or­der that af­fects cells’ mi­to­chon­dria and re­sul­ted in four pre­vious mis­car­ria­ges for the cou­ple. The child has shown no signs of the di­sea­se, New Scien­tist re­por­ted. The cou­ple had been trying to start a fa­mi­ly for ne­ar­ly 20 ye­ars.

Jo­hn Zhang and a team from New York Ci­ty’s New Ho­pe Fer­ti­li­ty elec­ted to per­form the pro­ce­du­re in Mexi­co, whe­re “the­re are no ru­les,” Zhang said.

The tech­ni­que cre­a­ted an egg that pai­red the nu­cle­us from one of the mo­ther’s eggs with the di­sea­se-free mi­to­chon­dri­al DNA from a do­nor’s egg, the ma­ga­zi­ne ex­plai­ned. That egg was then fer­ti­li­zed with sperm from the fa­ther.

Out of fi­ve em­bry­os cre­a­ted from the me­thod, one de­vel­o­ped nor­mal­ly. Zhang’s team im­plan­ted that em­bryo in­to the mo­ther, and ni­ne months la­ter, on April 6, the child was born. The Uni­ted King­dom al­lows the cre­a­ti­on of ba­bies from three pe­o­p­le des­pi­te the ethi­cal ques­ti­ons it rai­ses. A U.S.-ba­sed doc­tor, Jac­ques Co­hen, de­vel­o­ped a pre­vious three-pa­rent fer­ti­li­ty me­thod in the 1990s. His cli­nic hel­ped birth 17 ba­bies using that tech­ni­que. But so­me of the fe­tuses re­sul­ting from the tech­ni­que we­re mis­sing X chro­mo­so­mes. One child showed ear­ly signs of a de­vel­op­men­tal dis­or­der. In 2002, the Food and Drug Ad­mi­ni­stra­ti­on as­ked the cli­nics to cea­se using the tech­ni­que. They all did.

(usa­o­day)

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