PMID- 25773729 OWN - NLM STAT- MEDLINE DCOM- 20160627 LR - 20150918 IS - 1541-0420 (Electronic) IS - 0006-341X (Linking) VI - 71 IP - 3 DP - 2015 Sep TI - Penalized regression for interval-censored times of disease progression: Selection of HLA markers in psoriatic arthritis. PG - 782-91 LID - 10.1111/biom.12302 [doi] AB - Times of disease progression are interval-censored when progression status is only known at a series of assessment times. This situation arises routinely in clinical trials and cohort studies when events of interest are only detectable upon imaging, based on blood tests, or upon careful clinical examination. We consider the problem of selecting important prognostic biomarkers from a large set of candidates when disease progression status is only known at irregularly spaced and individual-specific assessment times. Penalized regression techniques (e.g., LASSO, adaptive LASSO, and SCAD) are adapted to handle interval-censored time of disease progression. An expectation-maximization algorithm is described which is empirically shown to perform well. Application to the motivating study of the development of arthritis mutilans in patients with psoriatic arthritis is given and several important human leukocyte antigen (HLA) variables are identified for further investigation. CI - (c) 2015, The International Biometric Society. FAU - Wu, Ying AU - Wu Y AD - Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1. FAU - Cook, Richard J AU - Cook RJ AD - Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1. LA - eng GR - FRN 13887/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150313 PL - England TA - Biometrics JT - Biometrics JID - 0370625 RN - 0 (Biomarkers) RN - 0 (HLA Antigens) SB - IM MH - Algorithms MH - Arthritis, Psoriatic/blood/*diagnosis/*epidemiology MH - Biomarkers/blood MH - *Disease Progression MH - HLA Antigens/*blood MH - Humans MH - Prevalence MH - *Regression Analysis MH - Reproducibility of Results MH - Risk Assessment/methods MH - Sensitivity and Specificity MH - *Severity of Illness Index MH - Time Factors OTO - NOTNLM OT - EM algorithm OT - Interval-censoring OT - LASSO OT - Penalized regression OT - SCAD OT - Variable selection EDAT- 2015/03/17 06:00 MHDA- 2016/06/28 06:00 CRDT- 2015/03/17 06:00 PHST- 2013/09/01 00:00 [received] PHST- 2014/12/01 00:00 [revised] PHST- 2015/02/01 00:00 [accepted] PHST- 2015/03/17 06:00 [entrez] PHST- 2015/03/17 06:00 [pubmed] PHST- 2016/06/28 06:00 [medline] AID - 10.1111/biom.12302 [doi] PST - ppublish SO - Biometrics. 2015 Sep;71(3):782-91. doi: 10.1111/biom.12302. Epub 2015 Mar 13.