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  1. move assumptions out of all of the examples

  2. add row captions to highlight exceptions/assumptions

This is an example showing trial design and results from the in vitro bacterial reverse mutation test of Study #8325064. The bacterial reverse mutation test uses four different amino acid-requiring strains of Salmonella typhimurium (S. typhimurium) and one strain of Escherichia coli (E. coli) to detect point mutations, which involve substitution, addition or deletion of one or a few DNA base pairs. The principle of this bacterial reverse mutation test is that it detects

  • How do we handle "toxic, no revertant colonies"?  (LAK will add 6 records with GTSTAT = NOT DONE, GTREASND = "TOO MUCH CYTOTOXICITY,"
  • When "-" in Mean, Std Dev, Fold Inc - refer to SEND team's marked-up table (GTSTAT = NOT DONE; variety of REASND)
  1. recreate the data table - clean up, add "S" to the first set A
  2. move assumptions out of all of the examples
  3. add row captions to highlight exceptions/assumptions

This is an example showing trial design and results from the in vitro bacterial reverse mutation test of Study #8325064. The bacterial reverse mutation test uses four different amino acid-requiring strains of Salmonella typhimurium (S. typhimurium) and one strain of Escherichia coli (E. coli) to detect point mutations, which involve substitution, addition or deletion of one or a few DNA base pairs. The principle of this bacterial reverse mutation test is that it detects chemicals that induce mutations which revert mutations present in the S typhimurium and E. coli tester strains and restore the functional capability of the bacteria to synthesize an essential amino acid. The revertant bacteria are detected by their ability to grow in the absence of the amino acid required by the parent tester strain.

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. coli tester strains and restore the functional capability of the bacteria to synthesize an essential amino acid. The revertant bacteria are detected by their ability to grow in the absence of the amino acid required by the parent tester strain.


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  • Assumption:  When the experimental unit is derived from the species and strain, such as a cell line, then TESTSYS should be supplied.

In this example, the Trial Summary dataset, ts.xpt, includes many informational fields that may provide context at the study level, for Study 8325064.  Also, TSGRPID has been used to link records (name, location, country) related to the test facility (TSGRPID = 1) and records related to the Test Site (TSGRPID = 2). The Study Director is associated with the Test Facility and the Principal Investigator is associated with the Test Site. Finally, the Primary Treatment CAS Registry Number is not known and this is recorded as an empty TSVAL and UNKNOWN in the corresponding TSVALNF.

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Rows 1-2:Shows two records for TSPARMCD = "GLPTYP", using TSSEQ to indicate multiple records, since both GLP Types apply for this example study. 
Rows 9-12:TSGRPID has been used to link records (name, location, country) related to the test facility (TSGRPID = 1). The Study Director is associated with the Test Facility.
Rows 18-24:Shows that this example study includes two different species of bacteria and a total of five strains. 
Rows 18-22:Shows that TSGRPID (TSGRPID = 2) has been used to link the information for one species (Salmonella) with four different strains that are tested in this example study.
Row 23-24:Shows that TSGRPID (TSGRPID = 3) has been used to link the information for one species (Escherichia coli) with the strain that is tested in this example study.
Dataset2
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titlets.xpt (trial summary, study level parameters)
Assumption:  When the experimental unit is derived from the species and strain, such as a cell line, then TESTSYS should be supplied.

Row

STUDYID

ASSAYID

DOMAIN

TSSEQ

TSGRPID

TSPARMCD

TSPARM

TSVAL

TSVALNF

1

8325064AmesTS1
GLPTYPGood Laboratory Practice TypeFDA

2

8325064AmesTS2
GLPTYPGood Laboratory Practice TypeOECD

3

8325064AmesTS1
STSTDTCStudy Start Date2015-07-29

4

8325064AmesTS1
STITLEStudy Title

The Bacterial Reverse Mutation Test, Study 8325064-1


5

8325064AmesTS1
SNDIGVERSEND Implementation Guide VersionTOBACCO IMPLEMENTATION GUIDE VERSION 1.0

6

8325064AmesTS1
SNDCTVERSEND Controlled Terminology VersionSEND Terminology 2021-09-30

7

8325064AmesTS1
SSPONSORSponsor OrganizationExample Sponsor Inc.

8

8325064AmesTS1
SPREFIDSponsor's Study Reference ID
NOT APPLICABLE

9

8325064AmesTS11TSTFNAMTest Facility NameExample Tox Lab Name

10

8325064AmesTS11TSTFLOCTest Facility Location10 Somewhere Street, Montgomery, AL 10000

11

8325064AmesTS11TFCNTRYTest Facility CountryUSA

12

8325064AmesTS11STDIRStudy DirectorDr. R. Smith

13

8325064AmesTS1
GLPFLGLP FlagN

14

8325064AmesTS1
ASTDAssay StandardOECD Test No. 471 

15

8325064AmesTS1
ASTDVAssay Standard Version2020-06-29

16

8325064AmesTS1
SSTYPStudy TypeGENOTOXICITY IN VITRO

17

8325064AmesTS1
SSSTYPStudy Sub TypeBacterial Reverse Mutation Test

18

8325064AmesTS12SPECIESSpeciesSalmonella 

19

8325064AmesTS12STRAINStrainTA98

20

8325064AmesTS12STRAINStrainTA100

21

8325064AmesTS12STRAINStrainTA1535

22

8325064AmesTS12STRAINStrainTA1537

23

8325064AmesTS13SPECIESSpeciesEscherichia coli

24

8325064AmesTS13STRAINStrainWP2 uvrA pKM101
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titleRaw Data Table for Study 8325064

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