Node Connectivity
There are 3449 nodes that can be used as predessesor
for a node with an input port of type 
Table.
GATKHaplotypeCaller
Calls germline SNPs and indels via local re-assembly of haplotypes.
GATKPhaseByTransmission
Computes the most likely genotype combination and phases trios and parent/child pairs.
GATKRealignment
Realignment around insertions and deletions.
GATKSelectVariants
Selects a subset of variants from a larger callset.
GATKUnifiedGenotyper
Calls SNPs and indels.
GATKVariantFiltration
Filters variant calls based on INFO and FORMAT annotations.
GenotypeGVCFs
Performs joint genotyping on gVCF files produced by HaplotypeCaller.
MergeTwoVCFs
This node merges two VCF files into one combined VCF file.
VCFMerger
Combines VCF records from different sources.
VQSR
Creates a Gaussian mixture model by looking at the annotations values over a high quality subset of the input call set and then evaluate all input variants.