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The OpenCB Variant Normalization process normalises first splits the record into four three individual variants, one for each alternate allele;

#CHROM POS    REF    ALT       
1      100    AA     AT
1      100    AA     AAC
1      100    AA     A

Each variant is then allele trimmed and positions updated;

#CHROM POS    REF    ALT       
1      101    A      T
1      102    -      C
1      100    A      -

The final JSON representation of the Variant objects as stored in the OpenCGA database is as follows:

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