$VAR1 = {
          '42-MG-BA' => [
                          {
                            'chromosome' => '7',
                            'position' => '158751481',
                            'genotype' => 'CC'
                          },
                          {
                            'chromosome' => '7',
                            'position' => '158773210',
                            'genotype' => 'CG'
                          },
                          {
                            'chromosome' => '7',
                            'position' => '158773232',
                            'genotype' => 'AG'
                          },
                          {
                            'chromosome' => '7',
                            'position' => '158773936',
                            'genotype' => 'AA'
                          },