--- 
mappings: 
  - 
    mapped: 
      assembly: GRCh37
      coord_system: chromosome
      end: 877831
      seq_region_name: 1
      start: 877831
      strand: 1
    original: 
      assembly: GRCh38
      coord_system: chromosome
      end: 942451
      seq_region_name: 1
      start: 942451
      strand: 1