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Alnylam Cookie Policy

When you visit our web site, it may store or retrieve information on your browser, mostly in the form of cookies. You can find out more about cookies and how to control them in the information below.

By accepting the cookie banner on our web site you accept the use of cookies in accordance with this Cookie Policy. In particular, you accept the use of Third Party Cookies for the purposes described below.

If you do not accept the use of these cookies please disable them following the instructions in this Cookie Policy, for instance by changing your browser settings so that cookies from this website cannot be placed on your computer or mobile device.

What is a cookie?

Cookies are small text files that are placed on your computer or other Web-accessing devices by our websites. These cookies allow us to distinguish you from other users of our website, and to enhance our website and your experience when you browse our website. We also collect information about your use of the Site through cookies and similar technology. Cookies allow us to recognize you and maintain your preferences when you return to our Site. Cookie technology collects “clickstream” data, which does not include personally identifying information, but which reflects your activities on the Site and helps us to customize our Site experience and anticipate what may be of interest to our users, by monitoring traffic in popular areas and modifying the services and information to meet customer demand.

To find out more about cookies, including how to see what cookies have been set and how to the delete them, visit or

The types of cookies we use

The types of cookies used on this website can be classified into one of five categories, namely Strictly Necessary Cookies, Functional Cookies, Performance Cookies, Targeting Cookies, and Social Media Cookies.

  1. Strictly Necessary Cookies – These cookies are essential in order to enable you to move around the website and use its features, such as accessing secure areas of the website. These cookies don’t gather information about you that could be used for marketing or remembering where you have been on the internet. This category of cookies cannot be disabled.
  2. Functional Cookies - These cookies provide you with certain functionality or personalization on our websites. They may be set by us or by third party providers who services we have added to our pages. For example, we may use cookies to remember the choices you make (such as your preferred language), to enable embedded videos, or to provide enhanced and more personal features. These cookies are not essential but enhance your use of our websites.
  3. Performance Cookies - These cookies collect information about how visitors use a website, for instance which pages are the most and least popular and see how visitors move around the site. These cookies don’t collect information that identifies you. All the information that these cookies collect is aggregated and therefore anonymous, and is only used to improve how a website works. These cookies are not essential for the website to function. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
  4. Targeting Cookies - These cookies may be set through our site by our advertising partners. Targeting cookies use information relating to your access to and use of our websites and other online services to provide more personalized content to visitors both on our websites and once your leave our website, to segment visitors into remarketing campaigns, and to help us improve and analyze our digital marketing efforts. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. These cookies are not essential for the website to function, but you may notice less relevant advertisements and content (including marketing content) if they are disabled. If you would like more information about this practice, and to learn how to opt out of it in desktop and mobile browsers on the particular device on which you are accessing this Cookie Policy, please visit and
  5. Social Media Cookies - These cookies are set by a range of social media services that we have added to the site to enable you to share our content with your friends and networks. They are capable of tracking your browser across other sites and building up a profile of your interests. This may impact the content and messages you see on other websites you visit. These cookies are not essential for the website to function, but if you do not allow these cookies you may not be able to use or see these sharing tools.

Our website uses Google Analytics Cookies. We have enabled IP anonymization by default on our websites, which means Google will not store the IP address of your device. Because this functionality is enabled across our sites, your full IP address will only be transferred to Google in the United States in exceptional circumstances for anonymization in accordance with its privacy practices. To see an overview of privacy at Google and how this applies to Google Analytics, please click here. You may opt out of tracking by Google Analytics by clicking here.

Our website uses the following Google Analytics Cookies.

Cookie name Source Expiry Purpose
_ga Google Analytics 2 years from set/update These cookies are used to collect information about how visitors use our site. We use the information to compile reports and to help us improve our site. The cookies collect information in an anonymous form, including the number of visitors to the site, where visitors have come to the site from and the pages they visited.
_ga_xxxxxxx Google Analytics 2 years from set/update

You may also control and delete these cookies through your browser settings.

How to control cookies

If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.

If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit (link is external), which contains comprehensive information on how to do this on a wide variety of desktop browsers.

Other Tracking Technologies

We may also use pixel tags (small pieces of Java script code also known as web beacons and clear GIFs) on our Sites to track the actions of users on our Sites.

What is a pixel?

Unlike cookies, which are stored on the hard drive of your computer or mobile device by a website, pixel tags are embedded invisibly on webpages. Pixel tags measure the success of our marketing campaigns and compile statistics about usage of the Sites, so that we can manage our content more effectively. The information we collect using pixel tags is not linked to our users’ personal data.

The types of pixels we use:

Custom Audience Pixel, a service of Facebook Inc., (1601 S. California Ave, Palo Alto, CA 94304, USA), is a small piece of Java script code which we have integrated into our Sites. We use Custom Audience pixels in order to track information about how our websites are being used. We also use the Custom Audience Pixel for remarketing, so you may see our ads on Facebook after you have visited our sites. Facebook’s lookalike audience targeting feature also allows us to show ads on Facebook to similar audiences as our site visitors.The data collected through Facebook’s Pixel is anonymous to us—we do not see the personal data of individual users. This data is stored and processed by Facebook, and Facebook may link this information to your Facebook account and also use it for its own promotional purposes, in accordance with Facebook’s Data Usage Policy:

How to control pixels:

You can allow Facebook and its partners to place ads on and off Facebook. The legal basis for the use of this service is Art. 6 paragraph 1 sentence 1 letter f GDPR. You can object to the collection of your data by Facebook pixel, or to the use of your data for the purpose of displaying Facebook ads by contacting the following address