Reaction

Investigation Abnormal reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 1,375 reports · 24 co-occurring drugs

As of the last recalculation, Investigation Abnormal appears in 1,375 FAERS reports alongside 24 co-occurring drug terms. The strongest observed disproportionality signal is VENETOCLAX (PRR 26.1).

Important: FAERS is a spontaneous, voluntary, unverified reporting system. PRR and ROR identify reporting patterns for investigation; they are not incidence rates and do not establish causation.
DrugCo-reportsPRRROR
Venetoclax9926.126.2
Indomethacin1922.022.0
Tocilizumab14621.621.6
Azacitidine For2016.916.9
Leflunomide10015.515.5
Azacitidine2412.412.5
Ibrutinib6111.911.9
Hydroxychloroquine5511.611.6
Hydroxychloroquine Sulfate6210.710.7
Sulfasalazine5310.610.6
Desoximetasone1310.410.4
Thyroid, Porcine710.010.0
Risankizumab-Rzaa458.68.6
Ribociclib178.28.2
Upadacitinib438.28.2
Nilotinib157.87.8
Tofacitinib756.56.5
Acalabrutinib56.36.3
Abatacept546.16.1
Obinutuzumab65.55.5
Golimumab305.45.4
Pirfenidone145.25.2
Atezolizumab114.34.3
Glecaprevir And Pibrentasvir34.14.1

Related reactions

Data source: openFDA FAERS. See the OpenPV methodology and limitations.