Pregnancy-triggered atypical hemolytic uremic syndrome (aHUS) : a Global aHUS Registry analysis

© 2021. The Author(s)..

BACKGROUND: Atypical hemolytic uremic syndrome (aHUS) is a rare disease in which uncontrolled terminal complement activation leads to systemic thrombotic microangiopathy (TMA). Pregnancy can trigger aHUS and, without complement inhibition, many women with pregnancy-triggered aHUS (p-aHUS) progress to end-stage renal disease (ESRD) with a high risk of morbidity. Owing to relatively small patient numbers, published characterizations of p-aHUS have been limited, thus the Global aHUS Registry (NCT01522183, April 2012) provides a unique opportunity to analyze data from a large single cohort of women with p-aHUS.

METHODS: The demographics and clinical characteristics of women with p-aHUS (n = 51) were compared with those of women of childbearing age with aHUS and no identified trigger (non-p-aHUS, n = 397). Outcome evaluations, including renal survival according to time to ESRD, were compared for patients with and without eculizumab treatment (a complement C5 inhibitor) in both aHUS groups.

RESULTS: Baseline demographics and clinical characteristics were broadly similar in both groups. The proportion of women with p-aHUS and non-p-aHUS with pathogenic variant(s) in complement genes and/or anti-complement factor H antibodies was similar (45% and 43%, respectively), as was the proportion with a family history of aHUS (12% and 13%, respectively). Eculizumab treatment led to significantly improved renal outcomes in women with aHUS, regardless of whether aHUS was triggered by pregnancy or not: adjusted hazard ratio for time to ESRD was 0.06 (p = 0.006) in the p-aHUS group and 0.20 (p < 0.0001) in the non-p-aHUS group.

CONCLUSION: Findings from this study support the characterization of p-aHUS as a complement-mediated TMA.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:34

Enthalten in:

Journal of nephrology - 34(2021), 5 vom: 07. Okt., Seite 1581-1590

Sprache:

Englisch

Beteiligte Personen:

Fakhouri, Fadi [VerfasserIn]
Scully, Marie [VerfasserIn]
Ardissino, Gianluigi [VerfasserIn]
Al-Dakkak, Imad [VerfasserIn]
Miller, Benjamin [VerfasserIn]
Rondeau, Eric [VerfasserIn]

Links:

Volltext

Themen:

9007-36-7
Atypical hemolytic uremic syndrome (aHUS)
Complement C5 inhibitor
Complement Inactivating Agents
Complement System Proteins
Complement-mediated TMA
End-stage renal disease (ESRD)
Journal Article
Pregnancy
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 13.10.2021

Date Revised 12.11.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s40620-021-01025-x

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM32381395X