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A cancer staging client library
{
"id" : "jak2_80148",
"algorithm" : "eod_public",
"version" : "1.1",
"name" : "JAK2",
"title" : "Janus Kinase 2",
"notes" : "**Note 1:** Physician statement of JAK2 can be used to code this data item when no other information is available.\n\n**Note 2:** Janus Kinase 2 (JAK2, JAK 2) is a gene mutation that increases susceptibility to several myeloproliferative neoplasms (MPNs). Testing for the JAK2 mutation is done on whole blood. Nearly all people with polycythemia vera, and about half of those with primary myelofibrosis and essential thrombocythemia, have the mutation.\n\n**Note 3:** Record JAK2 for any hematopoietic neoplasm. It is most commonly used for the following histologies: \n* Polycythemia Vera (9950/3)\n* Primary myelofibrosis (9961/3)\n* Essential Thrombocytopenia (9962/3)\n* Chronic myelomonocytic leukemia (9945/3)",
"last_modified" : "2018-04-19T21:51:25.113Z",
"definition" : [ {
"key" : "jak2",
"name" : "Code",
"type" : "INPUT"
}, {
"key" : "description",
"name" : "Description",
"type" : "DESCRIPTION"
} ],
"rows" : [ [ "0", "JAK2 result stated as negative" ], [ "1", "JAK2 positive for mutation V617F WITH or WITHOUT other mutations" ], [ "2", "JAK2 positive for exon 12 mutation" ], [ "3", "JAK2 positive for other specified mutation" ], [ "4", "JAK2 positive for more than one mutation other than V617F" ], [ "5", "JAK2 positive NOS \nSpecific mutation(s) not stated" ], [ "7", "Test ordered, results not in chart" ], [ "8", "Not applicable: Information not collected for this case \n(If this item is required by your standard setter, use of code 8 will result in an edit error.)" ], [ "9", "Not documented in medical record\nJAK2 not assessed or unknown if assessed" ] ]
}