def parse_gnomad_response(row):
    """
    parse the genome field so it returns af, max(hom count)
    """
    genome = dict(row)["genome"]
    genome_af = genome["af"]
    hom = list(genome["populations"])
    m = 0
    for i in hom:
        if int(i["ac_hom"]) > m:
            m = i["ac_hom"]
    return (genome_af, m)