view TV-vs-background.xml @ 1:1c6710924e80 draft

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<tool id="t-vs-vnormal" name="Virtual Normal Correction SmallVars" version="1.6">
	<description> Filter small variants based on presence in Virtual Normal set  </description>

	<requirements>		
		<requirement type="package" version="1.7">cgatools</requirement>
	</requirements>
	
	<command interpreter="bash">
	TV-vs-background.sh 
		--variants $variants
		--reference ${reference.fields.reference_crr_cgatools}
		#if $virtnorm.VNset == "diversity":
			--VN_varfiles ${reference.fields.VN_genomes_varfiles_list} 
		#else
			--VN_varfiles ${reference.fields.VN_genomes_varfiles_list_1000G} 
		#end if
		--threshold $threshold
                --thresholdhc $thresholdhc
		--outputfile_all $output_all
		--outputfile_filtered $output_filtered		
	</command>
	
	<inputs>
		<param name="variants" type="data" format="tabular" label="List of Variants as produced by Listvariants program or VCF-2-LV conversion program"/>
		<!--select build-->
		<param name="reference" type="select" label="Select Build">
			<options from_data_table="virtual_normal_correction" />
			<filter type="data_meta" ref="variants" key="dbkey" column="0" />
		</param>
		<conditional name="virtnorm" >
		<param name="VNset" type="select" label="Select Virtual Normal set to use" help="1000Genomes set can only be used for hg19 samples, for hg18 54 genomes will be used.">
			<option value="diversity" > CG Diversity Panel and trios (54 Genomes) </option>
			<option value="thousand" > CG 1000G project genomes (433 Genomes) (hg19 only) </option>
		</param> 
		</conditional>
				
		<param name="threshold" type="text" value="1" label="Threshold: Filter variants if present in at least this number of the background genomes"/>
                <param name="thresholdhc" type="text" value="10" label="High Confidence Threshold: Label a somatic variant as high-confidence if locus was fully called in at least this many normal genomes" help="Please adjust according to number of normals used and desired stringency. "/>
		<param name="fname" type="text" value="" label="Prefix for your output file" help="Optional. For example sample name."/>
		<!--<param name="debug" type="select" label="individual level annotations?" help="get a columns per normal sample whether variant was present (only available for fully public normal samples)">
			<option value="N" > No  </option>
			<option value="Y" > Yes </option>
		</param>
                -->
	</inputs>

  <outputs>
    <data format="tabular" name="output_all" label="${fname} All variants for ${tool.name} on ${on_string}"/>		
    <data format="tabular" name="output_filtered" label="${fname} Filtered variants for ${tool.name} on  ${on_string}"/>
    <data format="tabular" name="output_filtered_highconf" label="${fname} High Confidence Filtered variants for ${tool.name} on  ${on_string}" from_work_dir="output_filtered_highconf.tsv"/>
    <!--<data format="tabular" name="output_filtered" label="${fname} Filtered variants for ${tool.name} on  ${on_string}"/>
	<data format="tabular" name="output_expanded" from_work_dir="output_expanded" label="${fname} expanded annotation for ${tool.name} on  ${on_string}">
		<filter> $debug == "Y" </filter>
	</data>	
    -->
  </outputs>

	<help> 
**What it does**

This tool compares a list of variants to a set of normal genomes. Each variant will be annotated with the number of normal samples it appears in.
The tool will also output how often the variant was found in one or both alleles (01 or 11), and distinguish between a variant not being present in the normal (00) 
or the location being no-called in the normal (NN) or half-called (0N,1N) etc. 

This may take quite some time depending on the number of input variants and the number of normal genomes.

**Input Files**  

This program takes as input a list of variants as produced by the ListVariants tool, or the vcf-to-LV preprocessing tool. Input must be a tab-separated file of the following format::

 variantID - chromosome - begin  -  end  -  varType - reference - alleleSeq - xRef
 1034	     chr1	  972803    972804  snp       T	          C	      dbsnp:rs31238120

valid entries in varType column are: snp,sub,ins,del. 

Chromosome coordinates must be zero-based half-open. 

Column names must match the ones given above.


**Output Files**

1) Original input file annotated with presence (or lack thereof) in background genomes

2) Filtered version of output 1, variants are removed when present in at least *threshold* of the background normal genomes (default: 1) (filters on column 9 of output file)

3) High Confidence filtered version of output 2. Of all the variants labelled somatic, filter out any variants not fully called in at least *high confidence threshold* normals. (filter on column 11 of output file)

Example output format::
 
 variantId chromosome	begin	end	varType	reference alleleSeq	xRef	           VN_occurrences	VN_frequency	VN_fullycalled_count	VN_fullycalled_frequency  VN_00	VN_01	VN_11	VN_0N	VN_1N	VN_NN	VN_0	VN_1	VN_N
 34	   chr1	        46661	46662	snp	T	  C	        dbsnp.100:rs2691309	26	        0.472727	33	                0.6	                  7	19	7	1	0	20	0	0	0
 35	   chr1	        46850	46850	ins		  A	        	                0	        0	        10	                0.181818	          10	0	0	5	0	39	0	0	0 
 36	   chr1	        46895	46896	snp	T	  C	        dbsnp.100:rs2691311	8	        0.145455	40	                0.727273	          33	7	0	2	1	11	0	0	0
 37	   chr1	        46926	46927	snp	G	  A	        dbsnp.100:rs2548884	7	        0.127273	43	                0.781818	          36	7	0	2	0	9	0	0	0

	</help>

</tool>