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Diagnosis and investigation of suspected haemophagocytic lymphohistiocytosis in adults: 2023 Hyperinflammation and HLH Across Speciality Collaboration (HiHASC) consensus guideline

Lookup NU author(s): Dr Ethan SenORCiD

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Abstract

© 2024 Elsevier LtdHaemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome characterised by persistently activated cytotoxic lymphocytes and macrophages, which, if untreated, leads to multiorgan dysfunction and death. HLH should be considered in any acutely unwell patient not responding to treatment as expected, with prompt assessment to look for what we term the three Fs—fever, falling blood counts, and raised ferritin. Worldwide, awareness of HLH and access to expert management remain inequitable. Terminology is not standardised, classification criteria are validated in specific patient groups only, and some guidelines rely on specialised and somewhat inaccessible tests. The consensus guideline described in this Health Policy was produced by a self-nominated working group from the UK network Hyperinflammation and HLH Across Speciality Collaboration (HiHASC), a multidisciplinary group of clinicians experienced in managing people with HLH. Combining literature review and experience gained from looking after patients with HLH, it provides a practical, structured approach for all health-care teams managing adult (>16 years) patients with possible HLH. The focus is on early recognition and diagnosis of HLH and parallel identification of the underlying cause. To ensure wide applicability, the use of inexpensive, readily available tests is prioritised, but the role of specialist investigations and their interpretation is also addressed.

Publication metadata

Author(s): Cox MF, Mackenzie S, Low R, Brown M, Sanchez E, Carr A, Carpenter B, Bishton M, Duncombe A, Akpabio A, Kulasekararaj A, Sin FE, Jones A, Kavirayani A, Sen ES, Quick V, Dulay GS, Clark S, Bauchmuller K, Tattersall RS, Manson JJ

Publication type: Review

Publication status: Published

Journal: The Lancet Rheumatology

Year: 2024

Volume: 6

Issue: 1

Pages: e51-e62

Print publication date: 01/01/2024

Online publication date: 29/11/2023

Acceptance date: 02/04/2018

ISSN (electronic): 2665-9913

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/S2665-9913(23)00273-4

DOI: 10.1016/S2665-9913(23)00273-4

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