def filter_startswith_prefix(dataframe, prefix="TALON"):
    """Filter out rows where 'annot_gene_id' column value starts with prefix.
    Args:
        dataframe: pandas DataFrame
        prefix: string
    Returns:
        pandas DataFrame
    """
    not_starts_with_prefix = dataframe["annot_gene_id"].apply(
        lambda x: not x.startswith(prefix)
    )
    return dataframe[not_starts_with_prefix]