@staticmethod
def _is_mitochondrial(record) ->bool:
    """Check whether or not the current record is a mitochondrial variant;
        if not will avoid sending useless requests to HmtVar.

        Args:
            record: current VCF record
        """
    return record.CHROM in ['M', 'MT', 'chrM', 'chrMT', 'chrRCRS']
