Evidence map›Paper›PMID 35873100›Full record

ReviewAmerican journal of blood research2022

Consensus recommendations on appropriate coagulation tests during emicizumab administration in Saudi Arabia.

Tarek Owaidah, Abdulakareem Almomen, Ahmed Tarawah, Ashraf Warsi, Fawaz Alkasim, Hazzaa Alzahrani, Mahassen Saleh, Ohoud Kashari, Wasil Jastaniah

Open access · greenAbstract readReview
In one paragraph

Review in American journal of blood research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.2field-weighted citation impact, top 49% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 1 citations in OpenAlex.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Tarek OwaidahHematology and Transfusion Medicine, Department of Pathology and Laboratory Medicine (MBC 10), King Faisal Specialist Hospital and Research Center Alfaisal University Riyadh, Saudi Arabia.
Abdulakareem AlmomenMedicine-Hematology, King Saud University Medical City and Blood and Cancer Center Riyadh, Saudi Arabia.
Ahmed TarawahPaediatric Haematology, Madina Maternity and Children Hospital Medina, Saudi Arabia.
Ashraf WarsiAdult Haematology, College of Medicine, Umm Al-Qura University, Mecca, Saudi Arabia; Princess Norah Oncology Centre, King Abdelaziz Medical City, Ministry of National Guard Health Affairs-WR Jeddah, Saudi Arabia.
Fawaz AlkasimPaediatric Haematology, Maternity and Children Hospital Riyadh, Saudi Arabia.
Hazzaa AlzahraniAdult Haematology, King Faisal Specialist Hospital and Research Centre Riyadh, Saudi Arabia.
Mahassen SalehPaediatric Haematology, King Faisal Specialist Hospital and Research Centre Riyadh, Saudi Arabia.
Ohoud KashariPaediatric Haematology, East Jeddah General Hospital Jeddah, Saudi Arabia.
Wasil JastaniahPediatrics and Pediatric Hematology/Oncology/BMT, College of Medicine, Umm Al-Qura University Mecca, Saudi Arabia.
King Faisal Specialist Hospital & Research Centre · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionEmicizumab is a bispecific monoclonal antibody with the ability to bridge FIXa and FX, mimic FVIII, and restore normal hemostasis in patients with hemophilia A. Moreover, substantial evidence has shown that emicizumab-treated patients do not require monitoring, except before surgery or invasive procedures. However, introducing this novel drug to the market poses some challenges to physicians and clinical laboratories due to its interaction with conventional coagulation tests.

methodsGiven the challenges and laboratory interactions posed by this novel drug, there is an unmet clinical need to develop clear recommendations for emicizumab laboratory monitoring to highlight which laboratory tests should be used, which tests should be avoided, and when these tests should be performed. These expert recommendations are essential to prevent inappropriate testing or misleading interpretations and reduce the extra costs of unnecessary monitoring.

resultsA consensus meeting was conducted in December 2019, including top experts on hemophilia from Saudi Arabia, to discuss this issue.

conclusionThe experts agreed that, aPTT (activated Partial Thromboplastin Time)-based tests are not suitable for laboratory monitoring patients treated with emicizumab. Only FVIII chromogenic assays based on bovine FIX and FX proteins can be used to measure FVIII levels. They reviewed and recommended the type and time of testing for anti-factor VIII antibodies. Drug levels should be measured using the recommended test only when the anti-drug antibody (ADA) is clinically suspected and after excluding other causes (such as patient non-compliance).

Indexed as

coagulation testConsensusemicizumabhaemophiliaKingdom of Saudi Arabia

Identifiers

PMID35873100
PMCPMC9301022
OpenAlexW4288064324

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.