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ôåøñí áàúø çãùåú äîåôéìéä äéåí  áúàøéê 24.4.2020

https://hemophilianewstoday.com/2020/04/24/hemlibra-can-interfere-with-tests-of-covid-19-associated-coagulation-problems-genentech-says/

    

äîìéáøä éëåìä ìäôøéò ìáãé÷åú ùì áòéåú ÷øéùä ä÷ùåøåú ì÷åøåðä - COVID-19, ëê äåãéòä äéöøðéú â'ððè÷ îáéú øåù

îàú: àéðñ îøèéðæ  PHD *


 

Genentech ôøñîä äåãòä ùîæëéøä ìàðùé î÷öåò áúçåí äáøéàåú ëé úøåôú ääîåôéìéä îúåöøúä äîìéáøä (emicizumab) éëåì ìäôøéò ìáãé÷åú îòáãä îñåéîåú ùîåããåú ÷øéùú ãí.

áî÷øä áå çåìé äîåôéìéä îèåôìé äîìéáøä ðãá÷éí á÷åøåðä äçáøä îæäéøä ëé ìà ëì äáãé÷åú éúàéîå ìðéèåø ÷øéùú äãí äìà ú÷éðä áëìé äãí - îöá äð÷øà ÷øéùä úåê-åøéãéú îåôöú - ù÷åøä ìòéúéí áæéäåîé äðâéó.

áäúçùá áëê ùäøåôàéí åäîòáãåú äîèôìéí áçåìé ÷åøåðä òùåééí ùìà ìäëéø àú äîìéáøä, àðå øåöéí ùúäéå îåëðéí ìùúó îéãò æä áî÷øéí áäí äåà øìååðèé. öééðä äçáøä áäåãòúä.

äîìéáøä îàåùøú áàøä"á ìèéôåì îåðò ùâøúé á÷øá îáåâøéí åéìãéí òí äîåôéìéä A, òí àå áìé ðåâãðéí. ìçåìéí àìä çñø âåøí ôåð÷öéåðìé – ô÷èåø 8 - (VIII FVIII), äçéåðé áëãé ìä÷øéù ãí ëøàåé.

áãåîä ìô÷èåø 8, äîìéáøä ôåòìú òì éãé ÷ùéøä ìô÷èåøéí 9 å-10. äãáø îñééò ìãí ìäéååöøåú ÷øéù áàåôï ú÷éï, îôçéú àåáãï ãí åîåðò ðæ÷ ìîôø÷éí åø÷îåú îãéîåí ôðéîé.

òí æàú, áâìì îðâðåï äôòåìä ùìå, äîìéáøä îôøéòä ìáãé÷åú îòáãä îñåéîåú ìîãéãú ÷øéùú ãí, îä ùâåøí ìøåôàéí ìäòøéê äòøëú éúø àú ôåèðöéàì ä÷øéùä ùì äîìéáøä áðñéáåú îñåéîåú.

éù ìöééï ëé áãé÷åú àìä àéðï îùîùåú ø÷ ìöåøê ôé÷åç òì çåìé äîåôéìéä. äí âí òåæøéí ìàáçåï åîò÷á àçø çåìéí áîçìåú àçøåú äîùôéòåú òì ä÷øéùä. î÷øä àçã ëæä äåà ÷øéùä úåê-åøéãéú îåôöú, îöá ùòìåì ìäúôúç áæéäåîéí çîåøéí áååéøåñ, åéëåì ìäåôéò ììà ÷ùø ìäîåôéìéä.

äîùîòåú äéà ùáãé÷åú îñåâ æä òìåìåú ùìà ìàúø áîãåé÷ áòéåú ÷øéùä ä÷ùåøåú ì÷åøåðä àí çåìä îùúîù áäîìéáøä.

àó ùîéãò æä éãåò á÷äéìú äîåôéìéä, çáøú â'ððè÷ îëéøä áëê ùàðùé î÷öåò áúçåí äáøéàåú äîèôìéí á÷åøåðä òùåééí ùìà ìäëéø àú ääîìéáøä åàú äùôòúä òì áãé÷åú ÷øéùä.

ìëï, ñéô÷ä äçáøä èáìä òí äîáçðéí äðôåöéí áéåúø ìðéäåì àðùéí òí îçìåú ÷øéùä ä÷ùåøåú ì÷åøåðä, òí îéãò òì äàí åëéöã äí îåùôòéí îäîìéáøä, åçìåôåú àôùøéåú.

"àí àãí äîèåôì áäîìéáøä æ÷å÷ ìèéôåì ò÷á úñîéðéí ùì æéäåí ÷åøåðä, àðå îîìéöéí òì äèáìä ùìòéì àå ùäîéãò éåòáø áàåôï éæåí ìøåôà äîèôì ëãé ìååãà ùäåà îåãò ìîéãò æä åìäæëéø ìå ìäúééòõ òí îåîçé äîåôéìéä åîøëæé äîéãò", äåãéòä äçáøä.

â'ððè÷ äæäéøä âí ëé äîìéáøä éöéáä åðùàøú áãí ìîùê ú÷åôåú àøåëåú (îçöéú äçééí ùìä, àå äæîï äðãøù ìøîåú ùìä ìäôçúä áçöé, äåà áòøê 30 éåí), ùéù ì÷çú áçùáåï ìðéäåì ä÷ìéðé ùì äçåìéí.

äçáøä âí ôåòìú ìäáðä äàí äîìéáøä îùôéòä òì áòéåú ÷øéùä ä÷ùåøåú ìæéäåîé ÷åøåðä. â'ðè÷ îòåããú àú ñô÷é ùéøåúé äáøéàåú ìãååç òì ëì äî÷øéí ùì æéäåîéí àå çùã ìæéäåîéí á÷øá àìä ùðîöàéí áèéôåì áàîöòåú "÷å ãéååç òì úåôòåú ìååàé" ùì â'ðè÷ áèìôåï 888–835–2555. ôøèéí òì îä ìãååç åîùàáéí îåòéìéí àçøéí ðéúï ìîöåà ëàï .

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* òì äëåúáú àéðñ îøèéðæ PHD

àéðñ äéà áòìú ãå÷èåøè áîãòéí áéå-øôåàééí îàåðéáøñéèú ìéñáåï, ôåøèåâì, ùí äúîçúä ááéåìåâéä ùì ëìé ãí, úàé âæò áãí åñøèï. ìôðé ëï ìîãä áéåìåâéä ùì úàéí åîåì÷åìøéåú áàåðéáøñéèú ðåáä ãä ìéñáåàä åòáãä ëòîéúú îç÷ø á Faculdade de Ciencias e Tecnologias åá- Instituto Gulbenkian de Ciencia. àéðñ òåáã ëéåí ëòåøëú îãòé ðéäåì, áùàéôä ìäòáéø àú ääú÷ãîåú äîãòéú äàçøåðä ì÷äéìåú äîèåôìéí áöåøä áøåøä åîãåé÷ú.

úøâåí îàðâìéú: àìé åéùðéöø

äîàîø äî÷åøé áàðâìéú:

April 24, 2020

Hemlibra Can Interfere with Tests of COVID-19-associated Coagulation Problems, Genentech Says 

By Ines Martins, PhD *

  • Genentech has issued a notice reminding healthcare professionals that its hemophilia A treatment Hemlibra (emicizumab) can interfere with some laboratory tests that measure blood coagulation.

In the event that hemophilia patients on Hemlibra become infected with COVID-19, the company warns that not all tests will be suitable to monitor the abnormal clotting in blood vessels — a condition called disseminated intravascular coagulation — that sometimes happens with the coronavirus infections.

“Given that the physicians and laboratories treating COVID-19 patients may not be familiar with Hemlibra, we want you to be prepared to share this information in cases where it is relevant,” the company wrote in the notice.

Hemlibra is approved in the U.S. for the routine preventive treatment of adults and children with hemophilia A, with or without inhibitors. These patients lack a functional factor VIII (FVIII), which is essential for blood to clot properly.

Similar to FVIII, Hemlibra works by binding to factors IX and X. This helps blood to clot normally, reducing blood loss and preventing damage to joints and tissues from internal bleeding.

However, due to its mechanism of action, Hemlibra interferes with some laboratory tests measuring blood coagulation, making doctors overestimate Hemlibra’s coagulation potential in certain circumstances.

Notably, these tests are not used just to monitor patients with hemophilia; they also help diagnose and monitor patients with other diseases affecting coagulation. One such case is disseminated intravascular coagulation, a condition that may develop in severe coronavirus infections and that can occur independently of hemophilia.

This means that such tests may not accurately detect COVID-19-associated coagulation problems if a patient is taking Hemlibra.

While this information is known in the hemophilia community, Genentech recognizes that many healthcare professionals treating COVID-19 may not be familiar with Hemlibra and its affect on coagulation tests.

So, the company provided a table with the assays most commonly used to manage people with COVID-19-associated coagulation diseases, with information about whether they are affected by Hemlibra, and possible alternatives.

“[I]f an individual on Hemlibra seeks treatment due to symptoms of COVID-19 infection, we recommend the above table or information is communicated proactively to the treating healthcare provider to ensure they are aware of this information and to remind them to consult the U.S. Prescribing Information,” the company wrote.

Genentech also warned that Hemlibra is stable and remains in the blood for long periods (its half-life, or the time required for its levels to reduce by half, is about 30 days), which should be taken into consideration for the clinical management of patients.

The company also is working to understand whether Hemlibra affects coagulation problems related to COVID-19 infections. Genentech encourages healthcare providers to report all cases of suspected or confirmed infections among those on the therapy through Genentech’s “adverse event reporting line” at 888–835–2555. Details on what to report and other useful resources can be found here.

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*Ines Martins, PhD

Ines holds a PhD in Biomedical Sciences from the University of Lisbon, Portugal, where she specialized in blood vessel biology, blood stem cells, and cancer. Before that, she studied Cell and Molecular Biology at Universidade Nova de Lisboa and worked as a research fellow at Faculdade de Ciencias e Tecnologias and Instituto Gulbenkian de Ciencia. Ines currently works as a Managing Science Editor, striving to deliver the latest scientific advances to patient communities in a clear and accurate manner.

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