Cochrane · systematic review · CD015167

Hyperimmune immunoglobulin for people with COVID‐19

Kimber, C, Valk, SJ, Chai, KL, et al. · Cochrane Database of Systematic Reviews · 2023 · Cochrane Library

HaematologyAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
14
current version
GRADE rated
11
No studies
2
Included studies
NR
No studies 2 · 14.3%Ungraded 1 · 7.1%Very low 1 · 7.1%Low 8 · 57.1%Moderate 2 · 14.3%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Hyperimmune immunoglobulin from human plasma compared to saline placebo

Population: individuals with moderate or severe COVID‐19
7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality at day 28
Hyperimmune immunoglobulin from human plasma vs saline placebo
RR 0.79 [0.43, 1.44]NRLow
Downgraded: imprecision
Worsening of clinical status at day 28 (data only available for clinical status worsened on day 7)
Hyperimmune immunoglobulin from human plasma vs saline placebo
RR 0.85 [0.58, 1.23]NRVery low
Downgraded: imprecision, indirectness
Improvement of clinical status (number of people discharged from hospital, or reaching category 1 on a 7‐point ordinal scale)
Hyperimmune immunoglobulin from human plasma vs saline placebo
RR 1.02 [0.97, 1.08]NRModerate
Downgraded: imprecision
Quality of life
Hyperimmune immunoglobulin from human plasma vs saline placebo
no estimate extractedNRNo studies
Adverse events of any grade up to 28 days (data only available for adverse events up to day 1)
Hyperimmune immunoglobulin from human plasma vs saline placebo
RR 0.98 [0.81, 1.18]NRLow
Downgraded: imprecision, indirectness
Adverse events at grades 3 to 4 up to 28 days
Hyperimmune immunoglobulin from human plasma vs saline placebo
RR 4.09 [1.39, 12.01]NRModerate
Downgraded: imprecision
Serious adverse events up to day 28 (data available only as a composite of serious adverse events or death up to day 28)
Hyperimmune immunoglobulin from human plasma vs saline placebo
RR 0.72 [0.45, 1.14]NRLow
Downgraded: imprecision

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) compared to saline placebo

Population: individuals with moderate or severe COVID‐19
7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality (by day 28)
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
RR 0.6 [0.26, 1.37]1 study · 241 participantsLow
Downgraded: imprecision
Worsening of clinical status (expressed as new need for IMV, admission to ICU, or death by day 28)
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
RR 0.67 [0.38, 1.18]1 study · 241 participantsLow
Downgraded: imprecision
Improvement of clinical status (number of participants discharged from hospital by day 28)
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
RR 1.06 [0.96, 1.17]1 study · 241 participantsLow
Downgraded: imprecision
Quality of life
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
no estimate extractedNRNo studies
Adverse events of any grade (by day 28)
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
RR 0.99 [0.74, 1.31]1 study · 243 participantsLow
Downgraded: imprecision
Adverse events at grade 3 or 4 (by day 28)
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
OR 43 participantsUngraded
Serious adverse events (by day 28)
RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo
RR 0.67 [0.38, 1.19]1 study · 243 participantsLow
Downgraded: imprecision