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Featured researches published by Irina Pivneva.


Clinical Lung Cancer | 2017

Access to Cancer Specialist Care and Treatment in Patients With Advanced Stage Lung Cancer

Apar Kishor Ganti; Fred R. Hirsch; Murry W. Wynes; Arliene Ravelo; Suresh S. Ramalingam; Raluca Ionescu-Ittu; Irina Pivneva; Hossein Borghaei

Background Access to specialty care is critical for patients with advanced stage lung cancer. This study assessed access to cancer specialists and cancer treatment in a broad population of patients with advanced stage lung cancer. Materials and Methods Two study samples were extracted from 2 claims databases and analyzed independently: patients aged ≥ 18 years with de novo diagnosis of metastatic lung cancer in the MarketScan database between 2008 and 2014 (commercially insured adult patients; n = 22,268); and patients aged ≥ 65 years in the Surveillance, Epidemiology, and End Results–Medicare database with a diagnosis of advanced non–small‐cell lung cancer between 2007 and 2011 (Medicare‐insured elderly patients; n = 9651). The study period spanned from 6 weeks before the first lung biopsy tied to the initial lung cancer diagnosis until the end of continuous health insurance enrollment, or data availability, or death. Results Among the commercially insured adults (MarketScan), most patients were seen by a cancer specialist within a month of first lung biopsy (80%), 12% were never seen by a cancer specialist, and 6% did not receive cancer‐directed therapy. Among the Medicare‐insured elderly patients (SEER–Medicare), the proportions were 79%, 4%, and 10%, respectively. Patients seen by a cancer specialist were more likely to receive cancer‐directed therapy (95% vs. 92%, P < .001 and 92% vs. 38%, P < .001, respectively). Conclusion Between 4% and 12% of patients with advanced stage lung cancer do not have appropriate access to cancer specialist, which appears to negatively affect access to optimal and timely treatment. Micro‐Abstract MarketScan and Surveillance, Epidemiology, and End Results–Medicare databases were analyzed separately to evaluate the access to cancer specialists and treatment of patients with advanced stage lung cancer. Between 4% and 12% of the patients were never seen by a cancer specialist, and between 6% and 10% did not receive cancer‐directed therapy. Patients seen by a cancer specialist were more likely to receive cancer‐directed therapy.


Lung Cancer | 2018

Severe adverse events impact overall survival and costs in elderly patients with advanced non-small cell lung cancer on second-line therapy

Hossein Borghaei; Yeun Mi Yim; Annie Guerin; Irina Pivneva; Sherry Shi; M. Gandhi; Raluca Ionescu-Ittu

OBJECTIVES Elderly patients with advanced non-small lung cancer (aNSCLC) represent a high-risk patient population due to disease burden, comorbidities, and performance status, particularly after progressing on first-line therapy. Among elderly patients who receive second-line therapy, treatment related toxicities can have substantial impact on both clinical and economic outcomes. This study assessed the impact of severe adverse events (AEs) during second-line therapy on overall survival (OS) and all-cause heathcare costs in elderly with aNSCLC. MATERIALS AND METHODS Patients with aNSCLC aged ≥65 years who initiated second-line chemotherapy/targeted therapy were identified in the SEER-Medicare database (2007-2011). Fifty-seven AEs were identified by literature review and consultation with two oncologists. Severe AEs were defined as AEs that required a hospitalization and were operationalized based on AE diagnosis(es) recorded during hospitalizations. OS post-second-line initiation and healthcare costs during second-line were compared between patients with and without severe AEs. RESULTS Among 3967 patients initiating second-line therapy, 1624 (41%) had ≥1 severe AE, where hypertension (26%), anemia (24%), and pneumonia (23%) were most commonly reported. Patients with and without severe AEs had similar demographic and cancer characteristics at diagnosis and similar second-line treatment regimens, but patients with severe AEs had more comorbidities at second-line initiation. Median OS was lower in patients with versus without severe AEs (6 vs. 11 months). After multivariate adjustment, hazard of death was more than twice higher in patients with versus without severe AEs (adjusted hazard ratio [HR] 2.31, 95% CI 2.16-2.47). Healthcare costs were more than twice higher in patients with versus without severe AEs (


Dermatologic Therapy | 2018

The Comorbidity Burden of Hidradenitis Suppurativa in the United States: A Claims Data Analysis

Alexandra B. Kimball; Murali Sundaram; Geneviève Gauthier; Annie Guerin; Irina Pivneva; Rakesh Singh; Arijit Ganguli

16,135 vs.


American Journal of Ophthalmology | 2018

Comorbidities and Prescribed Medications in Patients With or Without Dry Eye Disease: A Population-Based Study

Reza Dana; John L. Bradley; Annie Guerin; Irina Pivneva; Amber M. Evans; Ipek Özer Stillman

7559 per-patient-per-month). CONCLUSION Severe AEs among elderly patients with aNSCLC treated with second-line chemotherapy/targeted therapy were found to be associated with decreased OS and increased healthcare costs. Results suggest a potential link between severe AEs in second-line treated aNSCLC elderly and patient survival and economic burden to the healthcare system.


Advances in Therapy | 2018

Burden of Infections Among Chronic Myeloid Leukemia Patients Receiving Dasatinib or Nilotinib: A Real-World Retrospective Healthcare Claims Study in the United States

Karen Seiter; Dominick Latremouille-Viau; Annie Guerin; Briana Ndife; Karen Habucky; Derek Tang; Irina Pivneva; Patrick Gagnon-Sanschagrin; George J. Joseph

IntroductionPrior studies have reported that hidradenitis suppurativa (HS) is accompanied by a myriad of physical and mental conditions. However, given the small sample sizes and the limited number of pre-selected comorbidities, these studies do not provide a complete picture of the comorbidity burden of HS in the USA. Moreover, the relationship between HS severity and comorbidity burden has yet to be characterized. Using a large US claims database, we estimated the comorbidity burden associated with HS, stratified by disease severity.MethodsA retrospective matched cohort design was used. Patients with HS were classified into two severity cohorts (milder and more severe) using an empirical algorithm based on treatments received. The comorbidity burden was compared between each HS cohort and their matched HS-free cohort, and between patients with milder vs. those with more severe forms of HS.ResultsSeveral physical and mental comorbidities were found to be more prevalent in both cohorts of patients with milder and more severe forms of HS than in their matched HS-free cohorts. The comorbidity burden also increased greatly as the disease progressed to more severe forms.ConclusionsThe results of this study highlight the complexity of the comorbidity burden of HS patients and the need for a multidisciplinary approach to optimize the management of HS and its numerous associated comorbidities.FundingAbbVie, Inc.


Journal of Clinical Oncology | 2018

Symptoms following TKI therapy discontinuation after achieving an adequate response in patients with chronic myeloid leukemia in chronic phase (CML-CP).

Ellen K. Ritchie; Islam Sadek; Irina Pivneva; Annie Guerin; Dominick Latremouille-Viau; Briana Ndife; George J. Joseph; Ehab Atallah

PURPOSE To assess the proportion of comorbidities in patients with dry eye disease (DED) compared with matched patients without DED in a comprehensive US population. DESIGN Retrospective case-control study. METHODS Healthcare records for insurance claims data, detailing medical services incurred by military personnel and their families and dependents in military and civilian facilities across the United States from January 1, 2003, to March 31, 2015, were obtained from the Department of Defense (DOD) Military Health System (MHS). Diagnostic and procedural codes related to DED from selected International Classification of Diseases, Ninth Revision (ICD-9) Current Procedural Terminology codes and prescriptions for cyclosporine A ophthalmic emulsion were used to identify patients with newly diagnosed and prevalent DED in the MHS database. Age, sex, and geographically matched patients without DED were also identified from healthcare claims records. Medication use and comorbidities in these patient populations were assessed and compared. RESULTS In both the newly diagnosed and prevalent DED samples, the most common comorbidities were hypertension, cataracts, thyroid disease, type 2 diabetes, and glaucoma. All comorbidities were significantly higher in the DED vs non-DED groups (P < .001). Medication use (including, but not limited to, ophthalmic agents and drugs to treat comorbidities) was also significantly higher in the DED than in the non-DED groups (P < .001). CONCLUSIONS The high proportions of patients with DED with a range of comorbidities and prescribed medications highlight the need for a multidisciplinary approach to the management of these patients.


Journal of Clinical Oncology | 2018

Disability burden in patients with tenosynovial giant cell tumors in the United States from employer perspective.

Feng Lin; Raluca Ionescu-Ittu; Irina Pivneva; Willy Wynant; Sherry Shi; Azadeh Shohudi Mojdehi; Eric Q. Wu; Jackie Kwong; John A. Abraham

IntroductionTyrosine kinase inhibitors (TKI) have been demonstrated to prolong survival in patients with chronic myeloid leukemia (CML). However, TKIs may be associated with an increased risk of infections. This study compared healthcare resource utilization (HRU) and costs among patients with CML receiving dasatinib or nilotinib, with a focus on infection-related economic outcomes.MethodsTwo large administrative databases were used to identify adult patients newly diagnosed with CML who initiated dasatinib or nilotinib as first- (1L) or second-line (2L) therapy and were classified into the following 1L (dasatinib 1L/nilotinib 1L cohorts) or 2L (dasatinib 2L/nilotinib 2L) cohorts based on the initiated 1L/2L TKI therapy. Infection-related HRU and healthcare costs were compared between cohorts, separately for 1L and 2L.ResultsCohorts included 1156 patients in the dasatinib 1L and 677 patients in the nilotinib 1L cohorts, 322 patients in the dasatinib 2L, and 207 in the nilotinib 2L cohorts. In 1L and 2L, infection-related HRU was higher for dasatinib than nilotinib cohorts. Infection-related inpatient (IP) days constituted a larger proportion of all-cause IP days in the 1L/2L dasatinib than 1L/2L nilotinib cohorts (dasatinib 1L/2L: 53%/58%; nilotinib 1L/2L: 50%/46%). Compared to the nilotinib cohort, the dasatinib cohort had higher all-cause total costs per patient per year by US


Clinical Lymphoma, Myeloma & Leukemia | 2018

Symptoms Following Discontinuation of Tyrosine Kinase Inhibitor (TKI) Therapy After Achieving an Adequate Response in Patients with Chronic Myeloid Leukemia in Chronic Phase (CML-CP)

Ellen K. Ritchie; Islam Sadek; Irina Pivneva; Annie Guerin; Dominick Latremouille-Viau; Briana Ndife; George J. Joseph; Ehab Atallah

17,901 in 1L and


Journal of Thoracic Oncology | 2017

P2.03b-048 Access to Biomarker Testing in Patients with Advanced Non-Small Cell Lung Cancer: Topic: Biomarkers

Apar Kishor Ganti; Fred R. Hirsch; Murry W. Wynes; Arliene Ravelo; Suresh S. Ramalingam; Raluca Ionescu-Ittu; Irina Pivneva; Hossein Borghaei

28,625 in 2L. Of the total cost difference, infection-related were


Journal of Thoracic Oncology | 2017

Poster SessionP2.03b-048 Access to Biomarker Testing in Patients with Advanced Non-Small Cell Lung Cancer: Topic: Biomarkers

Apar Kishor Ganti; Fred R. Hirsch; Murry W. Wynes; Arliene Ravelo; Suresh S. Ramalingam; Raluca Ionescu-Ittu; Irina Pivneva; Hossein Borghaei

6048 (34%) in 1L and

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Apar Kishor Ganti

University of Nebraska Medical Center

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Murry W. Wynes

University of Colorado Denver

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Ehab Atallah

Medical College of Wisconsin

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