Welcome to Mass Spec 2023

The focus of this Symposium is the practical application of mass spectrometry (MS) in the biotechnology industry. Mass spectrometry is a critical analytical technology used in the discovery, development, and commercialization of biopharmaceuticals. This Symposium provides an interactive forum to share experiences, insights, and novel developments between industry, academia, and regulatory agencies worldwide. The goals of the Symposium are to communicate best practices and innovative approaches for mass spectrometry applications in biopharma, as well as promote colleague networking and open discussions, thereby allowing attendees to advance their own projects more efficiently and confidently.


    View the Scientific Program

    In-Person Attendees

    Mass Spec will be held in-person this year at the Renaissance Chicago Downtown Hotel in Chicago, IL USA. Symposium registration includes all sessions September 6-8, 2023, breakfast, lunch, coffee breaks, networking, technical seminars, access to the Exhibit and Poster Hall, Networking Reception, access to the digital schedule which features the final program, abstracts, and presenter’s slides (when made available) and any uploaded e-posters. Registration for the Short Course is an additional cost not included in the Mass Spec Symposium registration fee. Additional information on the Short Course will be available soon. In-person registration closed August 23, 2023.

    Registration Fees     

    Short Course: Fundamentals of Mass Spectrometry and Applications of Mass Spectrometry

    This pre-conference short course will provide an overview of the fundamentals of mass spectrometry and will focus on the practical industrial uses of mass spectrometry in the analysis of protein therapeutics.

    View Short Course Information


    Dynamic Duo. Register for Mass Spec Symposium plus the Mass Spec Short Course to receive a 25% discount on registration. Promo code = MS23_DDSC25

    New to CASSS? First-time attendees are eligible to receive a 23% discount on registration. Promo code = NewIn23

    Welcome Back! Registrants from the 2022 Mass Spec Symposium are eligible to receive a 23% discount on registration. Previous attendance will be verified.

    Contact Program Manager Carolyn Slade for more information on the available registration rate promotions and for the Welcome Back! promo code. 


    The Mass Spec Scientific Organizing Committee is accepting abstract submissions for oral and poster presentation consideration for the following topics:

    Topics include the following:

    • Multispecifics: Characterization and Development Changes/ADC’s and Antibody Oligonucleotide Conjugates
    • Molecular Design, Developability, and Biotransformation
    • Emerging Mass Spectrometry Technologies for HOS
    • Mass Spectrometry in Gene and Cell Therapy
    • Product and Process Characterization
    • New Technologies, Approaches, and Methods
    • Next Generation Investigators

    The deadline to be considered for an oral presentation was July 5, 2023.
    The deadline to be considered for a poster presentation was August 11, 2023.

    All program presenters are encouraged to review the information provided to ensure you are prepared for your experience. 

    Presenter Resources

    Questions? Please contact Carolyn Slade, Symposium Manager, or call the CASSS office at 510.428.0740.

    COVID Protocols

    CASSS is committed to protecting its attendees, participants, and staff members to the highest degree possible when attending our conferences. To ensure we provide a safe environment, CASSS strongly encourages COVID-19 vaccinations, and all other routine vaccinations to protect you from infectious diseases, serious illness, and hospitalization. CASSS will follow guidances established by the facility hosting the conference and/or local and state health authorities in which the conference is located.

    For more information, visit CASSS’ COVID Protocol

    Hotel Information

    Renaissance Chicago Downtown Hotel
    1 West Upper Wacker Drive
    Chicago, IL 60601
    Telephone: 800.468.3571
    Website: Renaissance Downtown Chicago Hotel
    (Note: To make reservations, please use the link below)

    Make Renaissance Chicago Downtown Hotel your home away from home in the Chicago Loop. From the moment you step into our hotel's modern lobby, we provide everything you need for a first-class stay in the Theatre District. Delight in contemporary hotel rooms and suites near the Riverwalk, each of which offers a host of fantastic amenities. Many accommodations also boast panoramic views of the downtown Chicago skyline.

    A room block is reserved for Symposium delegates at the special group rate of $249 USD for a *single or double room (plus 17.4% occupancy tax). The deadline to reserve your accommodations was August 23, 2023, at 5:00PM PST. 

    The Renaissance requires a first night deposit guaranteed with a major credit card to hold your reservation.** To make room reservations, please use the reservation link above or call 800.468.3571. Please identify yourself as an attendee of the “CASSS Mass Spec 2023 Symposium” to secure the special rate.

    After August 23, 2023, reservations will be accepted on a space and rate availability basis. The room block will most likely be filled before the deadline; we recommend attendees book their hotel accommodations well before the deadline to secure the special rate.

    Hotel Parking

    Hotel parking is not free or included with registration. Rates are:

    • Overnight - $78 USD daily
    • 8-12 hours - $68 USD daily
    • 2-8 hours - $58 USD daily
    • 0-2 hours - $48 USD daily

    Download the Spot Hero App to find affordable parking locations within walking distance of the hotel.

    By staying at the host hotel, you help CASSS meet its contractual obligations and keep future registration fees reasonable. Please take this into consideration when making your accommodation decisions.

    *Room types are not guaranteed and are based on availability when the individual reservation is made.
    Please note: Upon early departure, the Renaissance will charge a fee equivalent to one night’s reservation including applicable taxes to the credit card on file. CASSS is not responsible for, nor will pay for fees associated with attendee early departures. Please be sure of your departure date prior to making your reservation. In the event of an emergency, you must speak with the Manager on Duty at the hotel in addition to the Symposium Manager.

    Program Partners


    Past Event Videos

    • Chris Chumsae Invites You to Mass Spec

    • Keynote Speaker Mark Chance Invites You to Mass Spec

    • Collaborate to Advance the Industry: Steve Cypes Invites You to Mass Spec 2022

    • Collaborate to Advance the Industry: Cassie Eisele Invites You to Mass Spec 2022

    • Collaborate to Advance the Industry: Monica Driscoll Invites You to Mass Spec 2022

    • Collaborate to Advance the Industry: Paula Orens Invites You to Mass Spec 2022

    • Knowledge Sharing: Committee Member Andrew Mahan Shares His CASSS Mass Spec Experience

    • Knowledge Sharing: Committee Member John Valliere-Douglass Shares His CASSS Mass Spec Experience

    • Mass Spec 2021 Keynote: Melissa Trainer, NASA

    • Mass Spec 2021 Keynote: Brandon Ruotolo, University of Michigan

    • Mass Spec 2021 Keynote: Rohin Mhatre, Biogen

    • Mass Spec 2021 Keynote: Albert Heck, Utrecht University

    • Mass Spec 2020 Keynote: Neil Kelleher, Northwestern University

    • Mass Spec 2020 Keynote: Jennifer Van Eyk, Cedars-Sinai Medical Center

    • Mass Spec 2020 Keynote: Ryan Julian, University of California, Riverside

    • Mass Spec 2020 Keynote: Catherine Costello, Boston University Medical School