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java.lang.NullPointerException at org.mskcc.cbio.portal.model.ExtendedMutation.getGeneSymbol(ExtendedMutation.java:910) at org.mskcc.cbio.portal.servlet.MutationsJSON.processGetMutationsRequest(MutationsJSON.java:300) at org.mskcc.cbio.portal.servlet.MutationsJSON.processRequest(MutationsJSON.java:126) at org.mskcc.cbio.portal.servlet.MutationsJSON.doPost(MutationsJSON.java:786) at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)