ClinicalTrials.gg
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What’s New

What we changed on ClinicalTrials.gg, every two weeks. Each entry says what is different for you; the work behind the scenes is left out.

Known issues

  • Searches with many results are slow the first time

    A search with a very large number of results, like "breast cancer", can take a few seconds the first time. The same search is fast after that. We know how to fix it, but the fix is costly, so we plan to look at it again as searches and users grow.

Found something else wrong, or something you would like us to work on? Write to contact@clinicaltrials.gg. It is always welcome.

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See what changed on every study

The change records we started keeping in late September are now on screen. Sponsor pages are open, and search got a lot better.

  • Updates on study pages

    Study pages have a new Updates section. It summarizes when and how things like recruitment status, expected completion dates and participating sites changed, and the full history is one click away. If a study had an important change in the last 90 days, a one-line notice under its title says so.

  • Follow emails say what changed

    Emails about studies you follow used to say only "Registry record updated" and a date. They now tell you what actually changed, in the same words the study page uses.

  • Recent changes on condition and country pages

    Condition and country pages now show the last 30 days at a glance: studies that started recruiting, posted results, stopped, or were newly registered, and on country pages, studies that opened their first site in that country.

  • Sponsor pages

    You can now browse studies by the company or organization running them. Companies that appear under several names are brought together, so Wyeth's studies, for example, are under Pfizer. We have checked 527 companies by hand so far, and since October 13 universities, hospitals and government agencies are included too, such as MD Anderson Cancer Center and the National Cancer Institute. If we grouped something wrong, tell us with the "Something wrong?" button. No account needed. Browse by sponsor

  • How a study compares

    A new In context section on study pages shows how many studies share the same condition and how many of them are recruiting, how this study's enrollment compares with the median for similar studies, and how many studies its sponsor runs and how often it has posted results.

  • What the dates say together

    Some things only show up when you read a study's dates side by side, such as a primary completion date that has passed while the study is still listed as ongoing, or no results a year after completion. Study pages now point these out under From the registry's dates. They show only the two dates and the gap between them, with no judgement attached.

  • Smarter search

    Search now understands more of what you mean:

    • Search for a company, condition or country and its page appears as a card at the top of the results.
    • Other names for a drug, abbreviations like "CKD", and British spellings all find the same studies.
    • Typos get a "Did you mean" suggestion, so "brest cancer" finds breast cancer.
    • Part of a company's name is enough: "lilly" finds Eli Lilly and Company.

    Try a search

  • A surge of searches no longer slows the site

    On October 14, an automated program sent a flood of searches and slowed down the whole site. Search now runs on resources of its own, so even when searches pile up, study pages are not affected.

  • A one-line header on phones

    On phones, the Sign In button no longer breaks onto two lines. When you are signed in, your initial appears in place of your name.

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Launch 🙌Our first user

Search engines began listing the site in earnest, and our first user signed up. We also smoothed out sign-in so that new visitors would not get stuck.

  • Search engines started to find us

    From the week of September 17, Google and Bing began crawling the site in earnest, reading more than 60,000 study pages in a single week. It is the first step toward our pages showing up in search results. And, to our delight, we got our first user! 🙌

  • Sign in with a six-digit code

    Sign-in emails now include a six-digit code along with the link. If you are signing in on your computer but reading email on your phone, just type in the code. On iPhone, Mail can fill in the code for you, so it takes one tap.

  • Sign-in links work in work and hospital inboxes

    Hospital and pharma inboxes often run security software that opens every link in an email as it arrives. That used up the sign-in link before you could click it. Now, opening the link shows one more confirmation button, and sign-in finishes only when you press it, so the security software can no longer use up your link.

  • A sign-in error on iPhone Safari, fixed

    On iPhone Safari, entering the code after switching over to the Mail app could fail with "The network connection was lost." That no longer happens.

  • Every country in search

    The country filter in search used to offer only some countries. You can now choose any of the 248 countries that have clinical trials. Browse by country

  • We started recording what changes

    Since September 25, every time the registry updates a study, we record which fields changed and how. You cannot see this yet, but it is what our next update puts on study pages.

  • How long we keep server logs

    Our Privacy Policy now says that we keep site access logs, such as IP addresses, for 90 days, and we changed how long we actually keep them to match. Read the Privacy Policy

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Pre-launchLaying the foundations

Before we started welcoming users, we focused on building. You can now find trials without typing a search, move from one study to similar ones, and share a link that shows a card with the study's details.

  • Pages by condition and by country

    New pages bring together the trials for each condition and each country. You do not need to know what to search for. Start from something you care about, like breast cancer or South Korea, and look around. Browse by condition

  • From one study to similar ones

    At the bottom of each study page you will now find other studies in the same condition and other studies from the same sponsor, so you can go straight from one study to others worth comparing.

  • A one-paragraph summary at the top

    Right under each study's title, one paragraph now says what the study is, where it stands, and who is running it. It uses only what the registry already says, and names its source and the date it is current to.

  • Preview cards for shared links

    Paste a study link into a messaging app or social media and a card now shows its NCT number, title, recruitment status and phase. Before, nothing showed at all.

  • Easier-to-read colors and form fields

    We raised the contrast of the status colors and form fields to meet the WCAG AA accessibility standard.

  • We tell you when a study team badge goes

    The study team badge is tied to the contact listed in the registry. If a sponsor changes that contact and your badge disappears, we now email you to explain why. Since a contact can come back within a day or two, we wait three days before sending it.

  • Privacy Policy and Terms of Use

    We published our Privacy Policy and Terms of Use, which set out what we collect, why, and how long we keep it. Read the Privacy Policy

  • A faster condition filter in search

    The condition filter in search results now uses a prepared list instead of going through results one by one, so it loads faster.