Cardiac arrest & resuscitation

Neurofilament light chain for prognostication after cardiac arrest-first steps towards validation

Crit CarePublished Diagnostic accuracy study

Authors' conclusion

The results of this investigation confirm the prognostic value of NfL for identification of risk of poor neurologic outcome after cardiac arrest.

Study context

Population
Comatose OHCA patients in the BOX trial with ≥1 plasma biobank sample at 24–48 hNfL at 24 or 48 h
Participants
638 patients
Comparison
NfL 24 h vs NfL 48 h
Outcome
Prediction of poor neurologic outcome (CPC > 2) by AUROC; performance of previously identified cut-offs for 100% specificity
Follow-up
1 year
Methodological detailsvalidation of previously identified cut-offs, biobank substudy of the BOX trial
  • Validation of previously identified cut-offs
  • Biobank substudy of the BOX trial

Performance

As reported in the abstract

Poor neurologic outcome (CPC > 2)
Test or modelArea under the receiver operator curve (AUROC)Specificity (cut-off 1232 pg/mL)False-positiveSpecificity (cut-off 1539 pg/ml)
NfL 24 h0.9598%7 (1.4%)
NfL 48 h0.957 (1.3%)98%

Area under the receiver operator curve (AUROC)

NfL 24 h0.95
NfL 48 h0.95

Specificity (cut-off 1232 pg/mL)

NfL 24 h98%
NfL 48 h— not stated in the abstract

False-positive

NfL 24 h7 (1.4%)
NfL 48 h7 (1.3%)

Specificity (cut-off 1539 pg/ml)

NfL 24 h— not stated in the abstract
NfL 48 h98%

Original publication

Neurofilament light chain for prognostication after cardiac arrest-first steps towards validation. Crit Care. Published 6 August 2025. doi:10.1186/s13054-025-05579-1

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