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Toxicological information

Genetic toxicity: in vitro

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Administrative data

Endpoint:
in vitro gene mutation study in bacteria
Remarks:
Type of genotoxicity: other: "Gene Mutation"
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other: Predicted data
Title:
R: QSAR Toolbox 2.3.0.1132 prediction for "Gene Mutation" read across evaluation for 618-83-7
Author:
Sustainability Support Services (Europe) AB
Year:
2012
Bibliographic source:
QSAR Toolbox version 2.3

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: estimated data
Principles of method if other than guideline:
Prediction is done using QSAR Toolbox version 2.3.
GLP compliance:
no
Type of assay:
bacterial reverse mutation assay

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material : 5-hydroxyisophthalic acid
- Molecular formula : C8H6O5
- Substance type: Organic
- Physical state: Solid

Method

Species / strain
Species / strain / cell type:
S. typhimurium TA 100
Additional strain / cell type characteristics:
not specified
Metabolic activation:
without
Metabolic activation system:
S9

Results and discussion

Test results
Species / strain:
S. typhimurium TA 100
Metabolic activation:
without
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Vehicle controls validity:
not specified
Untreated negative controls validity:
not specified
Positive controls validity:
not specified
Remarks on result:
other: all strains/cell types tested
Remarks:
Migrated from field 'Test system'.

Any other information on results incl. tables






The prediction was based on dataset comprised from the following descriptors: "Gene mutation"
Estimation method: Taking highest mode value from the 5 nearest neighbours
Domain logical expression:Result: In Domain

((("a" and "b" ) and ("c" and ( not "d") ) ) and ("e" and "f" ) )

Domain logical expression index: "a"

Similarity boundary:Target: C(=O)(O)c1cc(C(=O)O)cc(O)c1
Threshold=50%,
Dice(Atom pairs)

Domain logical expression index: "b"

Similarity boundary:Target: C(=O)(O)c1cc(C(=O)O)cc(O)c1
Threshold=80%,
Dice(Atom pairs)

Domain logical expression index: "c"

Referential boundary: The target chemical should be classified as No alert found by DNA binding by OECD

Domain logical expression index: "d"

Referential boundary: The target chemical should be classified as Aromatic nitro OR Hydroquinones OR MA: Nitrenium Ion Formation OR MA: P450 Mediated Activation to Quinones and Quinone-type Chemicals OR Mechanistic Domain: Michael addition OR Mechanistic Domain: SN1 by DNA binding by OECD

Domain logical expression index: "e"

Parametric boundary:The target chemical should have a value of log Kow which is >= 1.07

Domain logical expression index: "f"

Parametric boundary:The target chemical should have a value of log Kow which is <= 1.95

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information):
negative without metabolic activation

Based on the prediction for in-vitro bacterial reverse mutation assay (e.g. Ames test) on S. typhimurium TA 100 without S9 metabolic activation it was estimated that 5-hydroxyisophthalic acid was non mutagenic.
Executive summary:

Based on the prediction for in-vitro bacterial reverse mutation assay (e.g. Ames test) on S. typhimurium TA 100 without S9 metabolic activation it was estimated that 5-hydroxyisophthalic acid was non mutagenic.