Node Connectivity
There are 2643 nodes that can be used as predessesor
for a node with an input port of type 
Generic Port.
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.
DESeq
This node uses the DESeq package to test for differential expression based on a model using the negative binomial distribution.
EdgeR
Assessing differential expression in comparative RNA-seq experiments.