4 title: "Search PGP data by trait"
8 h1. Tutorial: Search PGP data by trait
10 Here you will use the Python SDK to find public WGS data for people who have a certain medical condition.
14 <!-- _Explain the motivation in this example a little better. If I'm
15 reading this right, the workflow is
16 traits -> people with those traits -> presense of a specific genetic
17 variant in the people with the reported traits_ -->
19 <!-- _Rather than having the user do this through the Python command line,
20 it might be easier to write a file that is going to do each step_ -->
22 *This tutorial assumes that you are "logged into an Arvados VM instance":{{site.basedoc}}/user/getting_started/ssh-access.html#login, and have a "working environment.":{{site.basedoc}}/user/getting_started/check-environment.html*
24 If everything is set up correctly, you will be able to import the arvados SDK:
30 ...and display your account information:
33 arvados.service.users().current().execute()
36 h3. More prerequisites
45 List traits containing the term "cancer":
48 for t in filter(lambda t: re.search('cancer', t['name']),
49 arvados.service.traits().list(limit=1000).execute()['items']):
50 print t['uuid'], t['name']
54 <!-- _Should break this down into steps instead of being clever and making
55 it a python one-liner_ -->
61 qr1hi-q1cn2-8q57g2diohwnzm0 Cervical cancer
62 qr1hi-q1cn2-vqp4243janpjbyj Breast cancer
63 qr1hi-q1cn2-v6usijujcpwqrn1 Non-melanoma skin cancer
67 We will use the "Non-melanoma skin cancer" trait with uuid @qr1hi-q1cn2-v6usijujcpwqrn1@.
70 trait_uuid = 'qr1hi-q1cn2-v6usijujcpwqrn1'
75 List humans who report this condition:
78 trait_links = arvados.service.links().list(limit=1000,where=json.dumps({
79 'link_class': 'human_trait',
80 'tail_kind': 'arvados#human',
81 'head_uuid': trait_uuid
82 })).execute()['items']
85 <!-- _Same comment, break this out and describe each step_ -->
87 The "tail_uuid" attribute of each of these Links refers to a Human.
90 map(lambda l: l['tail_uuid'], trait_links)
96 [u'1h9kt-7a9it-c0uqa4kcdh29wdf', u'1h9kt-7a9it-x4tru6mn40hc6ah',
97 u'1h9kt-7a9it-yqb8m5s9cpy88i8', u'1h9kt-7a9it-46sm75w200ngwny',
98 u'1h9kt-7a9it-gx85a4tdkpzsg3w', u'1h9kt-7a9it-8cvlaa8909lgeo9',
99 u'1h9kt-7a9it-as37qum2pq8vizb', u'1h9kt-7a9it-14fph66z2baqxb9',
100 u'1h9kt-7a9it-e9zc7i4crmw3v69', u'1h9kt-7a9it-np7f35hlijlxdmt',
101 u'1h9kt-7a9it-j9hqyjwbvo9cojn', u'1h9kt-7a9it-lqxdtm1gynmsv13',
102 u'1h9kt-7a9it-zkhhxjfg2o22ywq', u'1h9kt-7a9it-nsjoxqd33lzldw9',
103 u'1h9kt-7a9it-ytect4smzcgd4kg', u'1h9kt-7a9it-y6tl353b3jc4tos',
104 u'1h9kt-7a9it-98f8qave4f8vbs5', u'1h9kt-7a9it-gd72sh15q0p4wq3',
105 u'1h9kt-7a9it-zlx25dscak94q9h', u'1h9kt-7a9it-8gronw4rbgmim01',
106 u'1h9kt-7a9it-wclfkjcb23tr5es', u'1h9kt-7a9it-rvp2qe7szfz4dy6',
107 u'1h9kt-7a9it-50iffhmpzsktwjm', u'1h9kt-7a9it-ul412id5y31a5o8',
108 u'1h9kt-7a9it-732kwkfzylmt4ik', u'1h9kt-7a9it-v9zqxegpblsbtai',
109 u'1h9kt-7a9it-kmaraqduit1v5wd', u'1h9kt-7a9it-t1nwtlo1hru5vvq',
110 u'1h9kt-7a9it-q3w6j9od4ibpoyl', u'1h9kt-7a9it-qz8vzkuuz97ezwv',
111 u'1h9kt-7a9it-t1v8sjz6dm9jmjf', u'1h9kt-7a9it-qe8wrbyvuqs5jew']
116 For now we don't need to look up the Human objects themselves.
118 As an aside, we will look up "identifier" links to find PGP-assigned participant identifiers:
121 human_uuids = map(lambda l: l['tail_uuid'], trait_links)
122 pgpid_links = arvados.service.links().list(limit=1000,where=json.dumps({
123 "link_class": "identifier",
124 "head_uuid": human_uuids
125 })).execute()['items']
126 map(lambda l: l['name'], pgpid_links)
132 [u'hu01024B', u'hu11603C', u'hu15402B', u'hu174334', u'hu1BD549', u'hu237A50',
133 u'hu34A921', u'hu397733', u'hu414115', u'hu43860C', u'hu474789', u'hu553620',
134 u'hu56B3B6', u'hu5917F3', u'hu599905', u'hu5E55F5', u'hu602487', u'hu633787',
135 u'hu68F245', u'hu6C3F34', u'hu7260DD', u'hu7A2F1D', u'hu94040B', u'hu9E356F',
136 u'huAB8707', u'huB1FD55', u'huB4883B', u'huD09050', u'huD09534', u'huD3A569',
137 u'huDF04CC', u'huE2E371']
140 These PGP IDs let us find public profiles:
142 * "https://my.personalgenomes.org/profile/huE2E371":https://my.personalgenomes.org/profile/huE2E371
143 * "https://my.personalgenomes.org/profile/huDF04CC":https://my.personalgenomes.org/profile/huDF04CC
148 Find Collections that were provided by these Humans.
151 provenance_links = arvados.service.links().list(where=json.dumps({
152 "link_class": "provenance",
154 "tail_uuid": human_uuids
155 })).execute()['items']
156 collection_uuids = map(lambda l: l['head_uuid'], provenance_links)
158 # build map of human uuid -> PGP ID
160 for pgpid_link in pgpid_links:
161 pgpid[pgpid_link['head_uuid']] = pgpid_link['name']
163 # build map of collection uuid -> PGP ID
164 for p_link in provenance_links:
165 pgpid[p_link['head_uuid']] = pgpid[p_link['tail_uuid']]
167 # get details (e.g., list of files) of each collection
168 collections = arvados.service.collections().list(where=json.dumps({
169 "uuid": collection_uuids
170 })).execute()['items']
172 # print PGP public profile links with file locators
173 for c in collections:
175 print "https://my.personalgenomes.org/profile/%s %s %s%s" % (pgpid[c['uuid']], c['uuid'], ('' if f[0] == '.' else f[0]+'/'), f[1])
182 https://my.personalgenomes.org/profile/hu43860C a58dca7609fa84c8c38a7e926a97b2fc+302+K@qr1hi var-GS00253-DNA_A01_200_37-ASM.tsv.bz2
183 https://my.personalgenomes.org/profile/huB1FD55 ea30eb9e46eedf7f05ed6e348c2baf5d+291+K@qr1hi var-GS000010320-ASM.tsv.bz2
184 https://my.personalgenomes.org/profile/huDF04CC 4ab0df8f22f595d1747a22c476c05873+242+K@qr1hi var-GS000010427-ASM.tsv.bz2
185 https://my.personalgenomes.org/profile/hu7A2F1D 756d0ada29b376140f64e7abfe6aa0e7+242+K@qr1hi var-GS000014566-ASM.tsv.bz2
186 https://my.personalgenomes.org/profile/hu553620 7ed4e425bb1c7cc18387cbd9388181df+242+K@qr1hi var-GS000015272-ASM.tsv.bz2
187 https://my.personalgenomes.org/profile/huD09534 542112e210daff30dd3cfea4801a9f2f+242+K@qr1hi var-GS000016374-ASM.tsv.bz2
188 https://my.personalgenomes.org/profile/hu599905 33a9f3842b01ea3fdf27cc582f5ea2af+242+K@qr1hi var-GS000016015-ASM.tsv.bz2
189 https://my.personalgenomes.org/profile/hu599905 d6e2e57cd60ba5979006d0b03e45e726+81+K@qr1hi Witch_results.zip
190 https://my.personalgenomes.org/profile/hu553620 ea4f2d325592a1272f989d141a917fdd+85+K@qr1hi Devenwood_results.zip
191 https://my.personalgenomes.org/profile/hu7A2F1D 4580f6620bb15b25b18373766e14e4a7+85+K@qr1hi Innkeeper_results.zip
192 https://my.personalgenomes.org/profile/huD09534 fee37be9440b912eb90f5e779f272416+82+K@qr1hi Hallet_results.zip
195 h3. Search for a variant.
197 Look for variant rs1126809 in each of the "var" files (these contain variant calls from WGS data).
201 for c in collections:
202 if [] != filter(lambda f: re.search('^var-.*\.tsv\.bz2', f[1]), c['files']):
203 job[c['uuid']] = arvados.service.jobs().create(body={
205 'script_parameters': {'input': c['uuid'], 'pattern': "rs1126809\\b"},
206 'script_version': 'e7aeb42'
208 print "%s %s" % (pgpid[c['uuid']], job[c['uuid']]['uuid'])
215 hu43860C qr1hi-8i9sb-wyqq2eji4ehiwkq
216 huB1FD55 qr1hi-8i9sb-ep68uf0jkj3je7q
217 huDF04CC qr1hi-8i9sb-4ts4cvx6mbtcrsk
218 hu7A2F1D qr1hi-8i9sb-5lkiu9sh7vdgven
219 hu553620 qr1hi-8i9sb-nu4p6hjmziic022
220 huD09534 qr1hi-8i9sb-bt9389e9g3ff0m1
221 hu599905 qr1hi-8i9sb-ocg0i8r75luvke3
224 Monitor job progress by refreshing the Jobs page in Workbench, or by using the API:
227 map(lambda j: arvados.service.jobs().get(uuid=j['uuid']).execute()['success'], job.values())
233 [True, True, True, True, True, True, True]
236 (Unfinished jobs will appear as None, failed jobs as False, and completed jobs as True.)
238 After the jobs have completed, check output file sizes.
241 for collection_uuid in job:
242 job_uuid = job[collection_uuid]['uuid']
243 job_output = arvados.service.jobs().get(uuid=job_uuid).execute()['output']
244 output_files = arvados.service.collections().get(uuid=job_output).execute()['files']
245 print "%s %3d %s" % (pgpid[collection_uuid], output_files[0][2], job_output)
252 hu599905 80 5644238bfb2a1925d423f2c264819cfb+75+K@qr1hi
253 huD09534 80 f98f92573cf521333607910d320cc33b+75+K@qr1hi
254 huB1FD55 0 c10e07d8d90b51ee7f3b0a5855dc77c3+65+K@qr1hi
255 hu7A2F1D 80 922c4ce8d3dab3268edf8b9312cc63d4+75+K@qr1hi
256 hu553620 0 66da988f45a7ee16b6058fcbe9859d69+65+K@qr1hi
257 huDF04CC 80 bbe919451a437dde236a561d4e469ad2+75+K@qr1hi
258 hu43860C 0 45797e38410de9b9ddef2f4f0ec41a93+76+K@qr1hi
261 Thus, of the 7 WGS results available for PGP participants reporting non-melanoma skin cancer, 4 include the rs1126809 / TYR-R402Q variant.