Good afternoon, everyone, and thank you for joining us. On today's call, we will review the highlights and financial results from the fourth quarter and full year of 2017. Following our comments, we will open up the call for questions. Earlier today, Innoviva issued a press release announcing recent corporate developments and financial results for the fourth quarter and full year of 2017. A copy of the press release can be found on our website. Before we get started, I would like to remind you that this conference call contains forward-looking statements regarding future events and the future performance of Innoviva. Forward-looking statements include anticipated results and other statements regarding Innoviva's goals, plans, objectives, expectations, strategies and beliefs. These statements are based upon the information available to the company today, and Innoviva assumes no obligation to update these statements as circumstances change. Future events and actual results could differ materially from those projected in the company's forward-looking statements. Additional information concerning factors that could cause results to differ materially from our forward-looking statements are described in greater details in the company's press release and the company's filings with the SEC. Additionally, adjusted EBITDA and adjusted earnings per share to non-GAAP financial measures will be discussed on this conference call. A reconciliation to the most directly comparable GAAP financial measures can also be found in our press release. Also yesterday, we announced the departure of Michael Aguiar, who has resigned as President and CEO of the company, and want to advise you that we don't intend to discuss this matter in today's call. Innoviva had a very successful fourth quarter of 2017, driven by record high TRx market share in the U.S. for RELVAR/BREO and ANORO and strong financial results. We remain confident that Innoviva is well positioned to deliver value to our shareholders through continuing profitability and cash generation. Our partnerships with GSK continues to make significant progress towards our goal of building BREO, ANORO and TRELEGY into leading global medicines for the treatment of patients suffering from asthma and COPD. In the U.S., BREO and ANORO both continue to significantly outperform the market in prescription volume growth, 77% year-over-year growth for BREO versus 4% for the ICS/LABA market and 69% for ANORO versus 4% for the maintenance bronchodilator market, resulting in new all-time high TRx market share for both products. During Q4 2017, BREO script volume grew by 10.4% versus the third quarter of 2017. This compares favorably to the total LABA/ICS market, which grew by 4.9% during that period. We saw the same trends for ANORO, which adds Q4 script growth of 11.3% over the prior quarter versus 3% for the market. According to the most recent weekly data compiled by IQVA (sic) [ IQVIA ], formerly IMS, TRx market share for BREO was 19.5% and ANORO reached 16%. In the week ending January 26, 2018, ANORO new-to-brand market share was approximately 21.2% overall and was approximately 23.7% for pulmonologists. Of note though, IQVIA that also shows that BREO new-to-brand market share remained flat during the fourth quarter at 23.2% overall for the week ending December 29 compared to the week ending September 29, but BREO remains the leading ICS/LABA among pulmonologists with a 41.4% share for the last reported week of the year. We believe these NBRx market share dynamics during the last quarter have been a result of recent competitive pressures, and we plan to continue to work very closely with our partner, GSK, to maximize market share for our joint products and remain confident that both BREO and ANORO will maintain their strong market position. In addition, our portfolio of commercialized products continued to grow in 2017 with the U.S. commercial launch of TRELEGY ELLIPTA, the new ICS/LABA/LAMA triple therapy in November. TRELEGY ended 2017 with over 3,000 TRxs in the U.S. As we've mentioned on prior calls, reported net sales by GSK traditionally experienced quarter-over-quarter volatility that has not been related to underlying prescription trends. While during the third quarter of 2017, GSK had reported that net sales for BREO were affected by unfavorable payer rebate adjustments related to prior periods, in the fourth quarter of 2017, as is traditionally the case, reported net sales for BREO and ANORO benefited from stronger winter market demand. RELVAR/BREO recorded total net sales during the fourth quarter 2017 of $405.3 million, up 48% from the fourth quarter of last year. Net sales in the U.S. were $241.6 million, up 53% compared to Q4 of last year, while outside the U.S., net sales were $163.7 million in the fourth quarter of 2017, an increase of 42%. For ANORO, Q4 net sales were $147.3 million, a 62% increase from the fourth quarter of 2016. GSK initiated the commercialization of TRELEGY ELLIPTA in the U.S. markets during the fourth quarter of 2017 with reported net sales of $2.8 million. Overall in the U.S. market, BREO TRx in the fourth quarter of 2017 reached close to 1.4 million scripts, an approximately 61% increase compared to the fourth quarter of 2016. ANORO TRx in the fourth quarter of 2017 grew by approximately 64% during the same period. With strong underlying demand trends, favorable 2018 reimbursement status and an effective collaboration with GSK, we remain optimistic about the potential for our products. In November, we announced positive data from a study comparing ANORO ELLIPTA and STIOLTO RESPIMAT for symptomatic patients with COPD. We view this study as an additional complement to support the commercialization effort of ANORO in a competitive market. In addition, in November 2017, we announced the filing of a supplemental new drug application with the U.S. Food and Drug Administration for an expanded indication for the use of TRELEGY ELLIPTA in COPD. Turning to our financial results. We are very pleased with our strong financial performance during 2017. In total, we generated more than $227.9 million in royalties earned in 2017, which translated into more than $183.6 million in income from operations and $207.5 million in adjusted EBITDA for the year, achieving a 91% EBITDA margin. Looking at the progress we've seen over the last year, we remain confident in our financial performance. Our royalties earned in the fourth quarter of 2017 were 17 -- 70, 7-0, $70.5 million, a 51% increase over the fourth quarter of 2016, offset by $3.5 million of net noncash amortization expense. Royalty revenues earned for the fourth quarter of 2017 included $60.8 million for BREO, $9.5 million for ANORO and $0.2 million for TRELEGY. Total operating expenses in the fourth quarter of 2017 were $3.1 million. This includes $3.4 million in operating expenses, $2.4 million in noncash stock compensation expenses and a $2.7 million D&O insurance recovery for litigation costs resulting from proxy contest. Year-to-date, total operating expenses were $33.6 million, which includes $8.1 million in net proxy contest and related litigation costs, and $9.8 million of noncash stock-based compensation expenses. We continued to generate strong cash flow from our operations in the fourth quarter of 2017. Income from operation was $66.4 million, a 76% increase compared to $37.7 billion in the fourth quarter of 2016. Adjusted EBITDA was $72.3 million in the fourth quarter of 2017, a 65% increase compared to $43.7 million in the fourth quarter of 2016. Net income attributable to Innoviva stockholders for the fourth quarter of 2017 was $58.4 million or $0.50 basic EPS, a 129% increase compared to $25.5 million in the fourth quarter of 2016 or $0.24 basic EPS. For the full year 2017, our income from operation was $183.6 million, an increase of 68% compared to 2016. In spite of incurring costs associated with the proxy contest litigations, which reduced basic EPS by approximately $0.08 per share in 2017, our basic EPS was $1.25 per share for the full year 2017, up 131% compared with basic EPS of $0.54 in 2016. This strong annual increase in the result -- is the result of the steady growth in our profitability and a gradual reduction in share count resulting from the execution of our 2017 capital return program. We completed in December '17 the $80 million ASR program by purchasing 6.1 million shares of our common stock at an average price of $13.09 per share, bringing our total stock repurchases for the year to $97.5 million for a total of 7.4 million shares or 7% of outstanding shares at the beginning of the year. We also repaid $85.9 million of our long-term debt during 2017. Over the last 12 months, we generated approximately $207.5 million in adjusted EBITDA, and with the continued reduction of our debt level, our total net debt balance was reduced to $548.2 million at the end of 2017, resulting in a leverage ratio of 2.6x net debt to last 12 months adjusted EBITDA as of that date. Cash, cash equivalents, short-term investments and marketable securities totaled $129.1 million as of December 31, 2017, and we had $70.5 million of royalty receivables from GSK at the end of the fourth quarter. With a more optimized capital structure, substantially reduced cash interest costs and continued strong cash-generating capacity, we believe we are in a strong financial position for 2018. Finally, I'd like to mention our preliminary assessment of the effects of the December 2017 U.S. tax reform. Although a review is ongoing, we currently expect to see a positive impact from the new tax regime for Innoviva, mainly due to the reduction in the corporate tax rate from 35% to 21%. Assuming the rates remain as they are now, this should lead to lower cash taxes to be paid by the company once our NOLs are fully utilized. In summary, we remain optimistic about our future prospects based upon gains in prescription volumes and market share for our products and the strong financial profile of the business. Our primary focus in 2018 will remain the optimization of the commercial success and global rollout of our products, and we remain optimistic about the outlook of the company. And now, I'd like to ask the conference facilitator to open the call for questions.