Andreas Greinacher, Vaccine, Medical Health, Astrazeneca, Germany, J&J

Andreas Greinacher, Vaccine

Johnson & Johnson to cooperate in study of rare clots linked to COVID-19 vaccine, German scientist says

Johnson & Johnson to cooperate in study of rare clots linked to COVID-19 vaccine, German scientist says

20/4/2021 11:59:00 PM

Johnson & Johnson to cooperate in study of rare clots linked to COVID-19 vaccine, German scientist says

A German scientist studying extremely rare blood clots linked to AstraZeneca's COVID-19 vaccine said on Tuesday (Apr 20) Johnson & Johnson has ...

WorldA vial and sryinge are seen in front of a displayed Johnson&Johnson logo in this illustration taken Jan 11, 2021. (Photo: REUTERS/Dado Ruvic)21 Apr 2021 04:49AMShare this contentBookmarkZURICH: A German scientist studying extremely rare blood clots linked to AstraZeneca's COVID-19 vaccine said on Tuesday (Apr 20) Johnson & Johnson has agreed to work with him on the research after similar serious side effects emerged in recipients of its shot.

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Andreas Greinacher, a transfusion medicine expert at Greifswald University, announced the collaboration after the European Medicines Agency said it would add a label to J&J's vaccine warning of unusual blood clots with low platelet counts. AstraZeneca's shot has a similar warning.

AdvertisementAdvertisementAs with AstraZeneca, the EMA said benefits of getting J&J's shot still outweigh the clotting risk, a position Greinacher backs, too.Greinacher, who on Tuesday released a new paper offering a potential explanation for the complications, wants J&J vaccine samples to study in his lab. Since mid-March his team has been analysing specimens from people who suffered clots after getting AstraZeneca's shot. headtopics.com

"We agreed today with (J&J) that we will work together," Greinacher said during a news conference."My biggest need, which I've expressed to the company, is I would like to get access to the vaccine, because the J&J vaccine is not available in Germany."

Johnson & Johnson did not immediately respond to a request for comment.AdvertisementAdvertisementThe EMA said on Tuesday it suspects the vaccine may trigger an unwanted immune response, but safety committee chairwoman Sabine Straus said it has not identified specific risk factors.

"It would be very helpful if we know beforehand, whether it might be some kind of genetic disorder, or something else in the blood vessels," Straus told reporters.Greinacher does not believe such a prognostic test is likely, based on experience with a similar disorder called heparin-induced thrombocytopenia that has defied efforts to identify why some people may be predisposed to the serious condition.

"We even completely gene-sequenced 3,000 of these patients, and we couldn't find a genetic predisposition," he said.AdvertisementIn Greinacher's new, not yet peer-reviewed, paper he suggests the technology behind AstraZeneca's shot, some of its ingredients and the powerful immune reaction it induces, may contribute to a cascade of events that overpowers numerous mechanisms that normally keep the human immune system under control. headtopics.com

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Both the AstraZeneca and J&J vaccines use a common cold virus, albeit different ones, to ferry coronavirus proteins to cells to produce an immune response. Read more: CNA »

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