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Jnetics, PO Box 65520, London N3 9BU

Email: .(JavaScript must be enabled to view this email address)

Tel: 020 8123 5022


Who We Are

Jnetics employs an executive director and assistant director who work closely with our board of trustees and expert scientific and medical advisors. We also have a team of freelance professionals managing certain areas of activity and delivering specific projects. In addition, we are supported by volunteers who generously share their time and expertise to help progress our work.

Over time and with the necessary funding, Jnetics will employ other staff (e.g. outreach education officer, researcher etc.) to support our project work and enable us to expand our services.

Please click on the titles to open and close the following information sections.

Our executive director, Katrina Sarig, is responsible for our strategic direction, delivery of our services, as well as running the day-to-day aspects of the charity:

Katrina Sarig,
Executive Director, Jnetics

Katrina Sarig

Our assistant director, Joey Ziff, is responsible for managing our key projects, coordinating our volunteers and implementing our community screening events:

Joey Ziff,
Assistant Director, Jnetics

Joey Ziff

We are currently supported by two experienced freelance professionals:

  • Rachel Groenewoudt administrator
  • Sara Levene Jnetics genetic counsellor


Jnetics is managed by a board of trustees responsible for ensuring that the charity meets its objectives whilst complying with legal obligations under charity and company law. The board provides guidance for the strategic development of the charity and reviews work as it develops.

Our trustees have experience across charity management, finance and fundraising, marketing and PR, and healthcare.

Anthony Angel (chairman)

Anthony Angel

Ruth Angel

Ruth Angel

Eileen Jacobs, SROT
Founder of Cove Park / Former National co-chair of Jewish Women’s Week

Eileen Jacobs

Peter Jacobs, BSc, DMS
Ex-CEO of BUPA / Founder of Cove Park

Peter Jacobs

Lesley Isenberg, MBBCh MRCP MRCGP
GP/ Diabetes Specialist at the Wentworth Medical Practice

Leslie Isenberg photo

Ian Pearl, LLB
Solicitor, OGR Stock Denton

Josie Dobrin

Tammy Rothenberg, BM BCh, BA (hons), MRCPCH
Consultant Paediatrician, Hommerton University Hospital

Tammy Rothenberg

We were honoured and hugely grateful to have Dr Alan Naftalin, FRCOG (Obstetrician and Gynaecologist / Secretary, Jewish Medical Association UK) as one of our founding trustees who contributed enormously to our work right up until he passed away in December 2012.


Our expert scientific and medical advisors include scientists, clinicians, researchers and a genetic counsellor who are all specialists in fields relating to Jewish genetic disorders.

Our advisors guide us on what disorders are appropriate to cover; ensure that our information is accurate and disseminated responsibly; direct our position on testing; and help facilitate collaborative work that support our objectives.

Our scientific and medical advisors are listed below, please click on the names for more information about each.


Our volunteers all contribute in different ways. Some share their specialist expertise as consultants to the charity whereas others provide hands-on support with our activities and administration.

Current volunteers include people with experience in management, PR, social media, marketing, education, and fundraising.

If you are interested in offering your time and experience to help progress our activities, please visit our get involved section or contact us at .(JavaScript must be enabled to view this email address).