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Repligen Technical Seminar

Bioprocessing Breakthroughs and


Thursday, October 10, 2019   |   Washington, D.C.

Repligen technical seminars are unique opportunities to discuss with  key thought leaders and experts  the changing landscape of bioprocessing around the world. Industry case studies in process intensification, continuous processing and flexible facilities allow you to learn from adopters of transformative technologies, evaluate risk landscapes and set the standards for modern bioproduction.

In 2019, major technology breakthroughs will be introduced that signal market shifts in bioprocessing.

Locations include Shanghai, Washington, D.C., San Francisco, London and Geneva.

Click here to view past seminar agendas.

Courtyard by Marriot

204 Boardwalk Place
Gaithersburg, MD 20878


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Speaker Bio

Duncan_Low.pngDuncan Low is a consultant providing technical services in raw materials management and risk management to both manufacturers and suppliers in the biopharmaceutical industry. He is an active member of several industry groups and scientific advisory boards, including the ASTM E55 Executive Committee developing consensus standards for Manufacture of Pharmaceutical Products, the ISPE Executive Committee for PAT, the Biophorum Operations Group, and has also been a significant contributor to the PDA Task Group for Single Use Systems and the USP’s Committee of Experts. He was co-chair of the 2009 IFPAC Conference. His broad experience includes his role as a Scientific Executive Director at Amgen (2003 – 2017), where he led the Raw Materials Global Network and Materials Science teams. Prior to joining Amgen he held VP positions at Millipore and Pharmacia Biotech. He has an M.A. in biochemistry from the University of Cambridge and a Ph.D. in microbiology from the University of Glasgow.


In response to customers challenged with bioburden-sensitive TFF processes, technology leading single-use TangenX™ TFF flat sheet cassettes are now available in closed and irradiated format.  Used in ultrafiltration and diafiltration, the new cassettes come pre-assembled and pre-tested, using the same proprietary membrane choices and multiple MWCOs as SIUS™ flat sheet cassettes. This session will demonstrate how the new cassettes integrate easily into any process with faster turnaround time, improved productivity and lower risk of contamination.

Speaker Bio

David Bianchi.jpgMr. Bianchi is currently the Field Applications Specialist for Repligen downstream TFF products. He brings over 20 years of experience in process filtration and separation with a significant portion of that time focused on Tangential Flow Filtration applications utilizing flat sheet cassettes and hollow fiber modules. Mr. Bianchi has held various technical positions supporting Pall Corporation, Spectrum Laboratories, FloDesign Sonics and TangenX™. He holds a Bachelor of Science degree in Chemistry from Worcester Polytechnic Institute.


A reduced scale comparative evaluation of different Protein A capture resins was performed. Dynamic binding capacity (DBC) was measured across a range of flow rates in order to model productivity in various operational modes. Resin lifetime was estimated by measuring DBC after timed exposure to sodium hydroxide. Results of the analysis were used to assess process operating costs for each resin type.

Speaker Bio

John_Schreffler.pngJohn has 17 years of experience as a process development scientist, working at companies such as WuXi, Amgen, Morphotek, and for the last four years as a Principal Scientist for Janssen. He is currently working as the API lead for a vaccine project within Janssen. John has presented and published numerous times over the last ten years, most recently publishing a paper on the use of Bayesian statistics in the development of a modular viral clearance claim. He has also been involved in numerous cross industry groups and has authored two of the ASTM standards for viral clearance modular claims.

Paul_Randolph.pngPaul has 30 years of experience in biologics processes, both in process development and large scale manufacturing. In his current role he serves as a purification development lead for a vaccine in late development at Janssen. Paul leads the DSP sub-team for Janssen’s Parenteral Center for Innovation, a multidisciplinary team charged with evaluating new technologies and applying them to large molecule purification processes. Paul developed the Gamma Distribution Transition Analysis method and drove implementation for use in measuring column.


As with any other biological based production process, batch-to-batch variability during rAAV production using baculovirus/Sf9 requires careful control and monitoring. Asa critical raw material, Baculovirus inoculum exerts a strong impact on process yield and/or product quality. Each baculovirus bank requires extensive analytical characterization and production parameters are often re-optimized for each bank, adding manufacturing time and cost. Executing multiple large scale rAAV production runs from a single inoculum would create significant manufacturing value.

Voyager Therapeutics’ has advanced a scalable and robust high cell density perfusion baculovirus/Sf9 platform to manufacture Baculovirus Infected Insect Cells (BIICs) for use as virus inoculum banks. An Improved flow system promotes high cell density and enables media exchange prior to BIIC cell cryopreservation. This work demonstrates the strength of the Voyager Therapeutics baculovirus/Sf9 platform, its potential to enable the commercial manufacturing of product candidates and its promise as a robust supply technology for gene therapy patients.

Speaker Bio

MathurK.jpgKrishanu is an Engineer with the technical operations group at Voyager Therapeutics where he is working on developing the next generation manufacturing platform for gene therapy vectors. He brings over 6 years of experience in upstream process development, including his work at Alexion where he was a member of Global Product Development, focusing on both early and late stage upstream development. Additionally, Krishanu spent time at Alexion as a CMC project manager co-op, gaining his Six-Sigma yellow belt training and facilitating cross group interactions to move early stage projects forward.  Prior to being at Alexion he worked at Florida Biologix in Alachua, FL as part of their Upstream Process Development Group for AAV MFG. Krishanu holds an MS in Biomedical Engineering from UF and a BE in Biotechnology from Netaji Subhas Institute of Technology


High Productivity Harvest (HPH) is a novel application developed by Repligen that enables you to harvest a fed batch bioreactor in a fully sterile manner while eliminating both centrifugation and depth filtration. A 0.2µm filtered, closed system and single step process using the XCell™ ATF System, HPH can significantly increase yields above industry standards and generate a sterile clarified batch harvest ready for either batch or continuous chromatography. This webinar will demonstrate how HPH works, present initial results of up to a 2-fold increase in protein production, and how you can apply HPH specific to your product need or facility design.  

Speaker Bio

jbcheadshot.jpgJohn joined Repligen during 2014 as part of the acquisition of Refine Technology where he was Vice President. He has developed and worked with different upstream technologies and, most recently, has propelled the XCell™ ATF System to become the dominant industry technology in continuous culture. Previously, he has founded or co-founded multiple companies in several countries in industries from newspapers to bioprocessing. John advises and speaks on small business coaching and entrepreneurship. John is a regular international speaker on bioprocessing. He is the editor of two editions of a book introducing Continuous Bioprocessing.


Perfusion processes can achieve high cell densities (>50e6/mL) and consequently high productivity with the caveat that cell specific productivity can decrease during steady state perfusion with constant media composition. A strategy of feed adjustment over time that meets the needs of the cells at different stages of cell culture and results in improved productivity will be presented.

Speaker Bio

peter-amaya.JPGPeter Amaya received his Bachelor’s in Chemical Engineering from the University of Dayton and obtained his M.S. and PhD at the Ohio State University. While at Ohio State he characterized rare cells circulating in the blood of metastatic cancer patients to determine drug efficacy. Additionally, he was involved in the process development for manufacturing of endogenously produced extracellular vesicles from HEK293 cells for cancer treatment. He has been with MedImmune/AstraZeneca since 2017 as a process development scientist building next generation mammalian cell culture processes for manufacture of in-vivo biologics. 


As a bioprocessing innovator with technology expertise in filtration, Repligen has developed a breakthrough clarification and harvest technology that can signal a paradigm shift in mAbs and Gene Therapy bioprocessing.  A result of continuous innovation at Repligen, the solution integrates advances in multiple disciplines, combining novel polymer technology, various filtration modes, hardware, systems and automated process management.  Potential benefits to productivity, product quality, yield and workflow efficiency will be discussed.

Speaker Bio

Parra, Shelly.jpgShelly Parra has over 20 years of experience in biotherapeutic process development, scale-up, technology transfer, manufacturing, and validation. She is currently the head of the global Field Applications team at Repligen and works with customers optimizing and scaling both upstream and downstream unit operations.  Prior to Repligen, Parra was employed at Thermo Fisher Scientific, Amgen, Transkaryotic Therapies, and BASF Bioresearch. She holds BS and MS degrees in Biotechnology from Worcester Polytechnic Institute in Massachusetts.


There is no charge for attendance but registration is required. Seats are limited to end-users of bioprocessing tools and technologies. Travel, accomodations, and incidental expenses are the responsibility of attendees. Lunch will be served.