Contact Us

Contact Us

Y-mAbs is striving to make a difference in the treatment of pediatric oncology.
Connect with us.

Contact Information

In the US:
Y-mAbs Therapeutics, Inc.
230 Park Avenue, Suite 3350
New York, NY 10169
Telephone: +1 646 885 8505
Email: [email protected]
Y-mAbs Therapeutics, Inc.
R&D Laboratories
111 Ideation Way
Basement Floor, Room C-008
Nutley, NJ 07110
Telephone: +1 646 885 8505
Email: [email protected]
In the EU:
Y-mAbs Therapeutics A/S
Agern Allé 11, ground floor
2970 Hørsholm
Tlf.: +45 70 26 14 14
Email: [email protected]

Medical Information Request

To request medical information, please call 1-833-33YMABS (1-833-339-6227) and select option 1, or you may submit a medical question to [email protected].

Product Complaints and Adverse Events

To report an adverse reaction or product complaint, please contact us at 1-833-33YMABS (1-833-339-6227). Reports can also be made directly to FDA at or 1-800-FDA-1088 (1-800-332-1088).

Reporting Compliance Concerns

To report a compliance concern, please click here, or call 844-951-1999. The Y-mAbs Compliance Integrity Hotline is a telephone and web-based confidential reporting system.

General Inquiries

For all other inquiries, please email [email protected] or call 646-885-8505.

Y-mAbs Connect

Y-mAbs ConnectTM provides answers to questions related to access, insurance, financial support programs, and other resource programs for qualifying patients. To reach a Y-mAbs Connect Case Manager, contact us Monday through Friday, 8 am to 8 pm ET, at
1-833-33YMABS (1-833-339-6227) and select option 2.