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. Author manuscript; available in PMC: 2024 Apr 1.
Published in final edited form as: Environ Mol Mutagen. 2023 Mar 7;64(4):202–233. doi: 10.1002/em.22534

TABLE 9.

Summary of MultiFlow DNA Damage Assay results

Machine Learning (ML) Ensemble Global Evaluation Factor (GEF) Rubric
Aneugen Calls Clastogen Calls
Chemical +/−S9 RFa ANNb LRc RF ANN LR Overall ML Genotoxicity Calls (MoAd) Aneugen Calls Clastogen Calls Overall GEF Calls (MoA) Overall ML + GEF Calls (MoA)

Glyphosate −S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
+S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
Glyphosate IPA −S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
+S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
AMPA −S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
+S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
Diquat dibromide −S9 - - - + + + Clastogen - - Non-genotoxic Clastogen
+S9 - - - + + + Clastogen - + Clastogen Clastogen
Metolachlor −S9 - - - + + + Clastogen - + Clastogen Clastogen
+S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
Mesotrione −S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
+S9 - - - - - - Non-genotoxic - - Non-genotoxic Non-genotoxic
GBF e
Roundup Custom −S9 - - - + + + Clastogen - - Non-genotoxic Clastogen
+S9 - - - - + - Non-genotoxic - + Equivocalf Non-genotoxic
Halex GT −S9 - - - + + + Clastogen - + Equivocalf Clastogen
+S9 - - - - + - Non-genotoxic - - Non-genotoxic Non-genotoxic
a

RF = random forest.

b

ANN = artificial neural networks.

c

LR = linear regression.

d

Mode of action (MoA)

e

Glyphosate-based formulations (GBFs) other than Roundup Custom and Halex GT were identified as non-genotoxic by the ML ensemble and the global evaluation factor (GEF) rubric.

f

Although the GEF clastogen call is +, the positive result was not repeated and so the call is reported as “equivocal.”