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titleStudy 123, Report Table (for reference only, will be deleted?)

For the purposes of team review of the example data, the report is  included in this section: 

Sample data #1: Determination of the in vitro genotoxicity potential of 10 tobacco products in the in vitro Micronucleus Assay

Study info: This study was performed to assess the in vitro genotoxicity of 10 different tobacco products containing 1% to 2% nicotine. The genotoxic potential was determined using the in vitro micronucleus test with TK6 lymphoblastoid suspension cells. The study was conducted in compliance with the following documents:

  • OECD TG 487 (2010): Guideline for the testing of chemicals: In vitro mammalian cell micronucleus test.
  • BL SOP 132: Determination of the in vitro genotoxicity of condensates from tobacco products and ingredients for tobacco products / electronic vapour products – in vitro micronucleus test (IVM) with TK6 cells.

The cells were exposed to increasing dose levels of tobacco product using short term treatment in the presence and absence of an external metabolic activation system (ST+/-S9 mix) as well as a long term treatment in the absence of an external metabolic activation system (LT-S9 mix).

Toxicity was calculated as relative increase in cell count (RICC), relative cell count (RCC) and relative population doubling (RPD). RPD is the cytotoxicity measure used for the assessment. RICC and RCC are also reported but not considered for the assessment.

Note: OECD GUIDELINE FOR THE TESTING OF CHEMICALS

Population Doubling = [log (Post-treatment cell number ÷ Initial cell number)] ÷ log 2


Conclusion: All tobacco product evaluated did not induce any signs of severe toxicity or genotoxicity in any of the treatments and do not fulfil the criteria to be classified as genotoxic.

Reported results: (only listed the result of one tobacco product as an example)

  1. Statistical analysis

Adjusted p-values calculated for the micronucleus frequencies for every dose level as compared to the corresponding solvent control after ST in the presence and absence of S9 mix as well as LT in the absence of S9 mix. One way ANOVA with posthoc Dunnett’s test for multiple comparisons for the dose response and a two tailed unpaired student’s t-test for the comparison of positive and negative control were used. The difference between the samples is considered statistically significant at p≤0.05.




Treatment


Test date


Concentration [µg/ml]

Fold increase of MN

over background


Adjusted p- value

Significant increase Y/N


ST+ S9


25.05.2022

1250

0.9

0.9973

N

2500

0.9

0.9517

N

3750

0.6

0.2654

N

5000

0.9

0.9895

N

CPA [5µg/ml]

3.1

0.0003

Y


ST-S9


25.05.2022

1250

1.6

0.6408

N

2500

1.3

0.8995

N

3750

2.9

0.0106

N

5000

1.0

> 0.9999

N

Bleo [0.2µg/ml]

3.8

0.0002

Y


LT-S9


25.05.2022

1250

0.7

0.5958

N

2500

1.3

0.6378

N

3750

0.5

0.1146

N

5000

1.1

0.9929

N

Bleo [0.5µg/ml]

2.9

0.0047

Y

Bleo: Bleomycin; CPA: Cyclophosphamid A; statistically significant increases are highlighted in bold.


Expand
titleStudy 123, Raw data (for reference only, will be deleted?)

Expand
titlets.xpt (trial summary, study level parameters)
  • Assumption: The intent of this dataset is to provide a summary of trial (study) information. This is not subject-level data. 
  • Assumption: A Trial (study) can have more than one assay type
  • Assumption: ASSAYID value of ALL indicates that it applies to all assays in the study
  • This example currently shows SPDEVID and DUREFID in BOTH the TS domain and the TX domain, but we should discuss if this should only ever be in TX (with the same value for all sets if there is only one device used)
  • Assumption:  SPDEVID (sponsor defined device identifier) should be added at the trial set level (tx.xpt) - we can discuss if this should be in TS when there is only one device for a study
    • This allows for studies where there are multiple products and different product(s) per trial set, one record for each product that is being tested in each particular trial set (tx.xpt)

Row

STUDYID

ASSAYID

DOMAIN

TSSEQ

TSGRPID

TSPARMCD

TSPARM

TSVAL

TSVALNF

1123MNvitTS1
GLPTYPGood Laboratory Practice TypeFDA
2123MNvitTS2
GLPTYPGood Laboratory Practice TypeOECD
3123MNvitTS1
STSTDTCStudy Start Date2022-05-25
4123MNvitTS1
STITLEStudy Title

Determination of the in vitro genotoxicity potential of 10 tobacco products in the in vitro Micronucleus Assay


5123MNvitTS1
SNDIGVERSEND Implementation Guide VersionTOBACCO IMPLEMENTATION GUIDE VERSION 1.0
6123MNvitTS1
SNDCTVERSEND Controlled Terminology VersionSEND Terminology 2021-09-30
7123MNvitTS1
SSPONSORSponsor OrganizationExample Sponsor Inc.
8123MNvitTS1
SPREFIDSponsor's Study Reference ID
NOT APPLICABLE
9123MNvitTS11TSTFNAMTest Facility NameExample Tox Lab Name
10123MNvitTS11TSTFLOCTest Facility Location10 Somewhere Street, Montgomery, AL 10000
11123MNvitTS11TFCNTRYTest Facility CountryUSA
12123MNvitTS11STDIRStudy DirectorDr. R. Smith
13123MNvitTS1
GLPFLGLP FlagY
14123MNvitTS1
ASTDAssay StandardOECD Test No. 487 
15123MNvitTS1
ASTDVAssay Standard Version2016-07-29
16123MNvitTS1
SSTYPStudy TypeGENOTOXICITY IN VITRO
17123MNvitTS1
SSSTYPStudy Sub TypeIn Vitro Micronucleus
18123MNvitTS1
SPECIESSpeciesHomo Sapiens
19123MNvitTS1
??Test System?TK6 Lymphoblastoid Suspension Cells
20123MNvitTS1
SPDEVIDSponsor defined device identifierPUFFMASTER3K
21123MNvitTS1
DUREFIDSmoke RegimenMedium Intensity Regimen
Expand
titletx.xpt (trial sets)
  • During CT definition/reviews will decide appropriate TXPARM and TXVAL; Treatment duration may be controlled;  For now, we just include good example values based on our experience
  • Assumption: The Trial Sets (TX) domain provides the list of distinct sets of subjects having different experimental factors, treatment factors, inherent characteristics, or distinct sponsor designations as specified in the trial design.
  • Where is TK6 cell type?  is this test system (see below)
    • needs to be allowed to vary down to the well level / result level

A1:


A2:                                   

RowSTUDYIDASSAYIDDOMAINSETCD
SET (what sponsor calls it)
TXSEQTXPARMCDTXPARMTXVAL

123MNvitTX

A1

(table 1, row 1, ST exposure with S9)

ST+S9
METACTMetabolic Activation  (this is the type of activation used)+S9

123MNvitTXA1ST+S9
METACTFLY/N presence of metabolic activation (this indicates that metabolic activation was used)

123MNvitTXA1ST+S9
TRTDRTRGTreatment Duration target. (how do we show 3-6 hour range?  start/end, target and tolerance?, one text field not-analyzable)3

123MNvitTXA1ST+S9
TRTDRTOLTreatment Duration Tolerance

123MNvitTXA1ST+S9
TRTDURUTreatment Duration Unit (this is for both TRTDURT, TRTDURTOL)H

123MNvitTXA1ST+S9
INTRVN

name of the intervention article

(Tobacco ProdA, Bleomycin or Cyclophosphamid A)

Tobacco ProdA

123MNvitTXA1ST+S9
ITVTYPE

type of intervention article

choices of values:  product; negative control; positive control

Product

123MNvitTXA1ST+S9
ITVCONCConcentration of intervention article0

123MNvitTXA1ST+S9
ITVCONCUConcentration Unitug/ml

123MNvitTSA1ST+S9SPDEVIDSponsor defined device identifierPUFFMASTER3K

123MNvitTSA1ST+S9DUREFIDSmoke RegimenMedium Intensity Regimen

123MNvitTX

A2

(table 1, row 2)



METACTMetabolic Activation  (should there be two parms? Presence, type)?+S9

123MNvitTXA2

TRTDRTRGTreatment Duration target. (how do we show 3-6 hour range?  start/end, target and tolerance?, one text field not-analyzable)3

123MNvitTXA2

TRTDRTOLTreatment Duration Tolerance

123MNvitTXA2

TRTDURUTreatment Duration Unit (this is for both TRTDURT, TRTDURTOL)H

123MNvitTXA2

INTRVNname of the intervention articleTobacco ProdA

123MNvitTXA2

ITVTYPEtype of intervention articleProduct

123MNvitTXA2

ITVCONCConcentration of i a 1250

123MNvitTXA2

ITVCONCUConcentration Unitug/ml

123MNvitTSA2
SPDEVIDSponsor defined device identifierPUFFMASTER2023

123MNvitTSA2
DUREFIDSmoke RegimenHigh Intensity Regimen
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