Reaction profile

The FDA adverse-event record for splenic neoplasm

385 FDA reports name splenic neoplasm, a high-volume reaction in the CVM extract (VeDDRA 1977). Plate stamps and neighbourhood peers follow.

#748 of 2,481
by report volume (all reactions)
385
reports citing this reaction
62.3%
death-coded share
Dog
most-affected species

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Splenic neoplasm has 385 reports now versus 385 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
−0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Splenic neoplasm changes

FDA AER · VeDDRA plate

Code 1977 VOL-LOW

VOL-LOW · DEATH-HOT · MID-PACK · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-LOW 385 reports
  • DEATH-HOT 62.3%
  • MID-PACK #748/2481
  • PHOTO-FINISH Generalised rash
  • SPECIES-DOG Dog · 379
  • DRUG-LEAD Oclacitinib Malea… · 62
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Generalised rash (±0 reports)

Upper-third death-coded share drives the outcome stamps on this plate; volume band, corpus rank, and co-report peers follow. Not a clinical diagnosis.

High-volume neighbourhood around Splenic neoplasm

Upper-third volume poles plus nearest peers, not a full reaction corpus board reprint.

Vomiting · highest174348Chattering of teeth · near386Generalised rash · near385PR-HEART, LESION(S) · near385Splenic neoplasm · this reac…385Petechiae NOS · near384Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Splenic neoplasm

Splenic neoplasm: high death-coded share in the FDA AER plate

Signature read: Splenic neoplasm's 62.3% death-coded share is among the highest in the openFDA reaction corpus. Report volume is upper-third scale: 385 named reports in the openFDA extract. Death-coded share is upper-third: 240 of 385 reports (62.3% of named reports). Nearest volume peer: Generalised rash (±0 reports). Lead species Dog (379). Lead co-reported drug Oclacitinib Maleate (62).

Read these counts as reporting volume, not risk: per our methodology, A high death-coded share in FDA filings does not prove causation; co-reporting is voluntary temporal association only. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 379
Cat 5
Horse 1

Breeds Most Affected

Retriever - Labrador 57
Shepherd Dog - German 29
Crossbred Canine/dog 28
Retriever - Golden 27
Beagle 17
Dog (unknown) 13
Rottweiler 11
Collie - Border 8
Chihuahua 7
Shih Tzu 6

Associated Drugs

Oclacitinib Maleate 62
Carprofen 53
Milbemycin Oxime + Spinosad 47
Trilostane 30
Afoxolaner 28
Fluralaner Chew Tablets 24
Maropitant Citrate 22
Ivermectin + Pyrantel As Pamoate Salt 18
Spinosad 15
Tramadol 13
Cyclosporine 12
Meloxicam 12
Moxidectin 12
Polysulfated Glycosaminoglycan 12
Grapiprant 12
Deracoxib 11
Milbemycin Oxime + Praziquantel 10
Firocoxib 9
Prednisone 9
Gabapentin 8

Nationwide reactions with similar profiles

Two openFDA-derived peer sets for Splenic neoplasm, both floored at ≥50 reports so the neighborhoods stay in the advertised mass (the volume chart above is the unfloored photo-finish strip).

Similar report volume

Nearest other reactions by FDA report count (385 here).

Similar death-coded share

Nearest other reactions by death-coded share (62.3% here), distinct from the volume row.

What to do with this reaction

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Splenic neoplasm (#748 of 2,481 by report volume); death-coded 62.3%. PlainBreed reaction plate · death-coded share stamp 62.3% · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →