def genetic_modification_RNAi(testapp, lab, award):
    item = {
        'award': award['@id'],
        'lab': lab['@id'],
        'modified_site_by_coordinates': {
            'assembly': 'GRCh38',
            'chromosome': '11',
            'start': 20000,
            'end': 21000
        },
        'purpose': 'repression',
        'category': 'deletion',
        'method': 'RNAi'
    }
    return testapp.post_json('/genetic_modification', item).json['@graph'][0]