Publications by authors named "Emily T Silgard"

2 Publications

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Frequent Eczematous Dermatitis in Unrelated Cord Blood Hematopoietic Cell Transplant Recipients Compared With Other Donor Types.

Transplant Cell Ther 2021 Jul 29. Epub 2021 Jul 29.

Fred Hutchinson Cancer Research Center, Seattle, Washington; University of Washington, Seattle, Washington; Seattle Cancer Care Alliance, Seattle, Washington. Electronic address:

We have consistently noticed in our clinical practice eczematous dermatitis (EcD) without other pathologic findings of graft-versus-host disease (GVHD) in recipients of unrelated cord blood transplantation (CBT). We hypothesized that the incidence of EcD was higher in CBT compared with other donor types, and our objective in this study was to compare the frequency, clinical course, and response to therapy of EcD between CBT and non-CBT recipients. We conducted a retrospective study of 720 consecutive adult recipients of allogeneic hematopoietic cell transplants from 2010 to 2016 from any donor type and with follow-up for at least 1 year after transplantation. After using keyword-based automated scanning to identify "eczema," "dermatitis," or "spongiosis" terms in medical records, we retrieved 217 cases for manual record review. We identified 23 EcD cases (12 in CBT recipients and 11 in patients with other types of donors) with a median onset at 8 months after transplantation. The 2-year cumulative incidence of EcD was 20% (95% confidence interval [CI], 11.2% to 31.5%) after CBT and 1.7% (95% CI, .90% to 2.90%) with other types of donors (P < .0001). Fifteen cases had a skin biopsy without distinctive pathologic features of GVHD. The most common EcD-involved sites in CBT recipients were face (75%), neck (50%), and antecubital fossae (50%). Compared with patients with other types of donors, EcD after CBT was more likely to involve three or more sites (10 of 12 vs. 2 of 10; P = .008) and had a more protracted course (lasting >6 months in 6 of 58 vs. 1 of 661; P < .0001). In both groups, EcD responded to topical therapy, and only a few cases required systemic therapy. EcD is a relatively frequent skin condition among recipients of unrelated CBT. Irrespective of donor type, most cases of EcD can be successfully managed with only topical therapy. These findings will help providers recognize EcD, avoid potentially harmful systemic therapy, and better counsel transplant recipients.
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July 2021

Validity of Natural Language Processing for Ascertainment of and Test Results in SEER Cases of Stage IV Non-Small-Cell Lung Cancer.

JCO Clin Cancer Inform 2019 05;3:1-15

Fred Hutchinson Cancer Research Center, Seattle, WA.

Purpose: SEER registries do not report results of epidermal growth factor receptor () and anaplastic lymphoma kinase () mutation tests. To facilitate population-based research in molecularly defined subgroups of non-small-cell lung cancer (NSCLC), we assessed the validity of natural language processing (NLP) for the ascertainment of EGFR and ALK testing from electronic pathology (e-path) reports of NSCLC cases included in two SEER registries: the Cancer Surveillance System (CSS) and the Kentucky Cancer Registry (KCR).

Methods: We obtained 4,278 e-path reports from 1,634 patients who were diagnosed with stage IV nonsquamous NSCLC from September 1, 2011, to December 31, 2013, included in CSS. We used 855 CSS reports to train NLP systems for the ascertainment of and test status (reported not reported) and test results (positive negative). We assessed sensitivity, specificity, and positive and negative predictive values in an internal validation sample of 3,423 CSS e-path reports and repeated the analysis in an external sample of 1,041 e-path reports from 565 KCR patients. Two oncologists manually reviewed all e-path reports to generate gold-standard data sets.

Results: NLP systems yielded internal validity metrics that ranged from 0.95 to 1.00 for and test status and results in CSS e-path reports. NLP showed high internal accuracy for the ascertainment of and in CSS patients-F scores of 0.95 and 0.96, respectively. In the external validation analysis, NLP yielded metrics that ranged from 0.02 to 0.96 in KCR reports and F scores of 0.70 and 0.72, respectively, in KCR patients.

Conclusion: NLP is an internally valid method for the ascertainment of and test information from e-path reports available in SEER registries, but future work is necessary to increase NLP external validity.
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May 2019