Thank you, Ugur. Great to be with everyone today. Moving to slide 10 for an update on the distribution progress of our vaccine. We now have contracted orders for approximately 1.8 billion doses in 2021, which includes increased orders from the EU and UK and a number of developing countries. Multi-year contracts through 2022 and beyond are being negotiated with a number of countries around the world, demonstrating that there will be demand for our vaccine in the post-pandemic market. We have reached an agreement with Israel to supply millions of doses in 2022 and with Canada to supply up to 125 million doses in 2022 and 2023, with options to supply up to 60 million additional doses in 2024. We look forward to expanding supply to additional geographies beyond those shown here. Turning our attention to slide 11. We are aiming to increase our supply capacity to up to 3 billion doses in 2021, and we expect to be able to manufacture more than 3 billion doses in 2022. This increase was driven by the critical need that remains in many parts of the world requiring access to vaccine supply, as well as vaccinations. Looking at BioNTech's manufacturing network, I would like to point out that BioNTech has manufactured more than 50% of the drug substance rolled out to date worldwide. Our Marburg facility has made significant progress. We have established mRNA manufacturing at the Marburg site in less than six months, including EMA's approval of the manufacturing of our COVID-19 vaccine product at the facility in late March. As Ugur noted, the first batches of vaccine from the Marburg site were delivered in mid-April, which is truly a remarkable achievement. With the Marburg site fully operational, BioNTech's annual vaccine manufacturing capacity will be approximately 1 billion doses on an annual runway rate. Beyond COVID-19, this large in-house manufacturing capability position us for future success with additional pipeline products that we anticipate launching in the coming years. I now turn the call over to Özlem to provide an update on our oncology pipeline.
Özlem Türeci: Thank you, Sean. I will provide updates on selected on immunooncology programs which have recently advanced in clinical stage, of which we expect to reach significant milestones this year. For further details on other programs, please refer to our annual report which was filed with the US Securities Exchange Commission on March 30 and our quarterly update which will be filed with the SEC today. Despite the undeniable impact of the COVID-19 pandemic on our clinical operations, we expect to present several data sets and initiate multiple new trials. Slide 14 provides a snapshot of our immunooncology platform across the distinct drug classes. Our pipeline covers a broad range of immune therapy approaches that leverage powerful mechanisms of action and a diverse array of novel targets to address the unique molecular signature of each patient's tumor. We believe that harnessing complementary modes of action increases the likelihood of therapeutic success and unlock a larger potential market. Combination therapies of drugs that work synergistically are expected to be particularly useful for therapy-resistant tumor types, for which the chemotherapy and targeted approaches has failed. Our platforms are being developed to address these limitations and provide a pipeline of potentially combinable products, with complementary and synergistic immune modulatory modes of action. CARVac is one of our opportunities already in clinical testing. It combines our FixVac immunotherapy with our novel CAR-T therapies. Our pipeline highlights several other product candidates with a potential for synergistic combinations that are currently in clinical trials. Our most advanced oncology programs, including upcoming near-term milestones, are shown on slide 14. For our FixVac product candidate BNT111 and BNT113, we expect to start Phase II trials soon. The BNT111 is for the treatment of advanced melanoma and I will detail further momentarily. BNT113, our mRNA vaccine encoding E6 and E7 proteins of human papilloma virus 16 will be evaluated in combination with pembrolizumab versus pembrolizumab alone as a first line treatment in patients with unresectable recurrent or metastatic HPV16 positive head and neck squamous cell carcinoma expressing PD-L1. For BNT122, our autogene cevumeran for individualized neoantigen specific immunotherapy, partnered with Roche Genentech, the Phase II trial in first line treatment of metastatic melanoma and the Phase I basket trial in solid tumor remain ongoing. Based on promising data seen for iNeST, we decided to move into adjuvant treatment settings, starting with colorectal cancer. Due to slow enrollment caused by the ongoing pandemic, we are updating our guidance and expect to dose the first patient in the second half of this year in a randomized Phase II trial evaluating BNT122 in circulating tumor, DNA positive, surgically resected stage 2 high risk or stage 3 colorectal cancer patients. Together with Genentech, we are evaluating other options for treating early stage cancer patients with BNT122. Then there's our next generation checkpoint immune modulator program, which is partnered with Genmab. We expect to provide a data update in the second half of 2021 for the ongoing Phase I/II trial of BNT311, which targets PD-L1 and 4-1BB. We remain very encouraged by the results seen to date and believe this product has significant potential across multiple oncology indications, given the unmet need for improved checkpoint immunotherapies. We also plan to present data in the second half of 2021 from the ongoing Phase I/II trial of BNT312, which conditionally targets CD40 and 4-1BB. Slide 15 provides an overview of our next wave oncology assets, including six programs across four different technology platforms that have the potential to advance innovation beyond current boundaries. Three of these six highly innovative programs are in preclinical stage. Our first CARVac product candidate has entered clinical testing and we will be presenting first early data for BNT211 at the ongoing [indiscernible] 2021 meeting. Also, the first product from our NEOSTIM T cell therapy program, BNT221, has entered clinical testing. The first patient was dosed in a Phase I trial in April. I will discuss both cell therapy programs in greater detail shortly. On last quarter call, we also noted that, for BNT151, our first RiboCytokine program, encoding a modified IL-2, the first patient was dosed in a Phase I trial in solid tumors in February, a Phase I trial of BNT152, BNT153, our IL-2, IL-7 RiboCytokine combination in multiple solid tumors is expected to also start this year, as are Phase I trials in multiple solid tumors for BNT141 and BNT142, our first RiboMabs programs. Moving to slide 16. Our lead FixVac product candidate, BNT111, will soon be advancing into a randomized Phase II trials. This intravenous vaccine encodes six sets of four cancer specific antigens expressed in our mRNA backbone, optimized for immunogenicity and delivered in our RNA lipoplex formulation. The four antigens encoded in BNT111 are common to about 95% of all melanoma patients. As previously published in Nature, BNT111 in monotherapy and even more so in combination with anti-PD-1 has shown promising data in CPI experienced patients with advanced melanoma in our Phase I trial. Tolerable safety, durable objective responses in checkpoint inhibitor experienced patients with evaluable disease at baseline and high magnitude and persistent CD4 and CD8 T cell responses have been observed. We believe that these strong positive data provide compelling support for advancement of BNT111 in combination with anti-PD-1 into a Phase II study in a high medical need setting, namely patients with anti-PD-1 refractory or relapsed unresectable stage 3 or 4 melanoma. This global study is a collaboration with Regeneron and is outlined on slide 17. 120 patients will be randomized 2 to 1 to 1 into three treatment arms evaluating BNT111 plus Regeneron's cemiplimab and each drug as a monotherapy. The primary endpoint is overall response rate and the BNT111 plus cemiplimab arm. Now moving to slide 18. BNT211 is BioNTech's first clinical stage chimeric antigen receptor product candidate. BNT211 targets the tumor-specific antigen CLDN6 and was developed in combination with a CAR-T cell amplifying RNA vaccine, short CARVac, in preclinical studies. In those studies, we demonstrated that CARVac treatment leads to in vivo expansion of adoptively transferred CART-T, resulting in increased persistence and superior functionality. BNT211 is expected to overcome CAR-T cell therapy limitations that temper efficacy in patients with solid tumors and thus limit widespread use of CAR-T cell therapies. CLDN6 is the target antigen for BNT211 and an ideal candidate for CAR-T cell therapy due to its absence in healthy adult tissues and its frequent expression in high medical need cancer. The ongoing Phase I/II trial is currently recruiting patients with CLDN6 positive relapsed or refractory advanced solid tumors, such as ovarian, testicular, lung, gastric and endometrial cancer. Slide 19 shows the trial design of the first-in-human Phase I/II trial of BNT211, evaluating the safety and efficacy of increasing dose levels of CLDN6 CAR-T cells, first without and then with CARVac. We have completed dose level one of the monotherapy arm with three patients and the next dose level is open for clearance. While the initial Phase I data from this trial is expected in the second half of this year, we are presenting some very early data from the trial at the ongoing [indiscernible] 2021 annual conference. Slide 20 shows preliminary data from the first dose cohort with three patients that were treated with a starting dose of CLDN6 CAR-T cell monotherapy. The underlying diseases were ovarian carcinoma, sarcoma and testicular carcinoma, all heavily pretreated. To date, we have not observed any acute toxicities or dose-limiting toxicities in these patients. All observed adverse events were transient and mild to moderate. We are very excited to report that an analysis of CLDN6 CAR-T cell magnitude and peripheral blood revealed detectable CAR-T cells with CAR-T engraftment in all patients. CAR-T cells in patient 1 declined after two weeks. For patient 3, a 90-fold expansion was seen. CAR-T cells of patient 2 expanded further, reaching a 700 fold expansion and a stable plateau from day 24 onwards. Tumor shrinkage was observed for this patient with 11% to 38% reductions in two or three target lesions six weeks after CAR-T cell transfer. So while early, the initial data from the trial are very encouraging and we look forward to presenting additional data in the second half of the year. Moving to slide 21. I'm excited to discuss our NEO-STIM BNT221 program. BNT221 is a fully personalized, neoantigen targeted adoptive T cell therapy candidate consisting of T cells targeting the most therapeutically relevant new antigens from each patient's tumor. We believe BNT221 offers several significant advantages as compared to TIL therapy, but T cells are derived from the patient's own peripheral blood which is advantageous with respect to accessibility since tumor acquisition may be limited. Cell therapy approaches typically rely on existing T cell repertoire in the tumor sample. We use the RECON bioinformatics platform to select the most therapeutically relevant neoantigen specific to each patient. We then custom manufacture new antigen peptides for each patient, which are used to activate and expand neoantigen specific T cells, recognizing patient-specific new antigens ex vivo. T cell responses from both [indiscernible] repertoire and the memory compartment are expanded. This results in CD4 and CD8 T cells against multiple tumor-specific targets, reducing risk of androgen escape and off-target toxicity. BNT221 induced T cell cultures directly recognized autologous patient tumor material, providing strong support for our approach. Many adoptive T cell therapy approaches are supported by high dose IL-2 to facilitate engraftment. BNT221 does not require IL-2 providing an important advantage in terms of product safety and tolerability. We believe this approach has potential to drive a robust and persistent antitumor response with improved safety and reduced antigen escape over other therapies. In April 2021, the first patient was dosed in a first-in-human Phase I dose escalation trial in metastatic melanoma refractory or unresponsive to checkpoint inhibitor. With this, I will now hand the call over to Sierk to provide an update on our financials.