Sci Translational Medicine Impact Factor

Science Translational Medicine’s Journal Impact Factor (JIF)

Science Translational Medicine's Journal Impact Factor (JIF) is the Clarivate-computed, journal-level citation ratio the AAAS journal receives each year in the Journal Citation Reports (JCR) -- citations in the JCR data year to the journal's citable items from the two preceding years, divided by that item count. Science Translational Medicine (ISSN 1946-6234 print, 1946-6242 online), launched October 2009, is a distinct, separately-indexed AAAS title from Science and Science Advances. The current JCR cycle is the 2025 data year, released June 2026; CASRAI attempted to verify the journal's figure for that cycle directly at science.org/journal/stm this session (last verified 2026-08-16) and the request was blocked by the publisher's Cloudflare bot protection (a 'Cookie Absent' error page was returned), so no current figure is stated as fact. The last figure CASRAI can attribute to a specific, dated cycle is approximately 14.6 for the 2024 data year (June 2025 release), per third-party JCR-tracking sources, with at least one independent aggregator instead reporting a close but distinct figure near 13.6 for the same data year -- an unresolved cross-tracker discrepancy. Per DORA and CoARA guidance, this journal-level figure should not be used as a proxy for the quality of any individual article published in Science Translational Medicine or the merit of its authors.

ByCASRAI Editorial Board

· Last updated 4 Sept 2026

What the number actually measures

The JIF is a ratio: citations received in a given year to a journal’s citable items (articles and reviews) published in the two preceding years, divided by the number of those citable items. Science Translational Medicine (ISSN 1946-6234 print, 1946-6242 online), launched in October 2009, is indexed in Clarivate’s Web of Science and receives its own JIF on that basis, computed the same mechanical way as every other JCR-indexed title.

Current status: publisher verification attempted and blocked

The current JCR cycle is the 2025 data year, released June 2026. CASRAI attempted to verify Science Translational Medicine’s figure for that cycle directly at science.org/journal/stm during this revision; the request was blocked by Cloudflare bot protection (a “Cookie Absent” error page was returned instead of journal content), so CASRAI cannot confirm the current, release-dated number as fact. No figure is stated as current on this page as a result. Readers who need the authoritative, release-dated 2025-data-year number should check science.org/journal/stm directly from a standard browser, or consult Clarivate’s Journal Citation Reports through an institutional subscription.

What was last reported, for context

For the 2024 data year (June 2025 release), third-party JCR-tracking sources and journal-affiliated summaries reported a figure of approximately 14.6, though at least one independent aggregator listed a close but distinct figure nearer 13.6 for the same data year — a cross-tracker discrepancy CASRAI has not been able to resolve against a primary Clarivate source. Treat either number as REPORTED-tier historical context for the prior cycle only, not as this journal’s current figure.

Editorial scope

Science Translational Medicine is a weekly journal covering basic, biomedical, translational, and clinical research about human disease — a bench-to-bedside focus that distinguishes it from Science Advances’ broad multidisciplinary scope and from Science’s general-science coverage, even though all three share the AAAS publisher.

Not to be confused with the Journal of Translational Medicine

Science Translational Medicine is a distinct title from the similarly-named Journal of Translational Medicine (published by BioMed Central/Springer Nature). The two are unrelated journals from different publishers, with different scope, editorial boards, and separately computed Journal Impact Factors. Confusing the two is a real, recurring sourcing error worth checking for before citing a figure.

Science Translational Medicine’s Impact Factor in 2026: what the named sources actually say

CASRAI does not publish a figure for Science Translational Medicine, because no figure could be attributed to a named, dated source. AAAS does not state one on a page CASRAI could retrieve. The journal’s science.org page carries no figure, and the AAAS “Journal metrics overview” page is served behind a Cloudflare JavaScript challenge that returned HTTP 403 on 23 August 2026. Clarivate’s JCR is behind an institutional subscription.

How to get the number yourself. The authoritative source is Clarivate’s Journal Citation Reports, which sits behind an institutional Web of Science subscription — most university libraries provide it, and the lookup takes under a minute by ISSN. Clarivate’s free Master Journal List will confirm whether the journal is in the Web of Science Core Collection at all (a title that is not indexed there receives no Impact Factor), though it does not show the numeric score. CASRAI’s guide to looking up a journal’s Impact Factor walks through both steps.

What CASRAI could verify at source

ISSN: 1946-6234 (print), 1946-6242 (online) — Crossref journal record, checked 23 August 2026.
Publisher: American Association for the Advancement of Science (AAAS) — Crossref journal record, checked 23 August 2026.
PubMed / MEDLINE: Currently indexed for MEDLINE; MEDLINE coverage v1n1, Oct. 7 2009- — NLM Catalog record, checked 23 August 2026.
DOAJ: Not listed in DOAJ (subscription journal) — DOAJ API, checked 23 August 2026.
Journal Impact Factor: no figure is published on this page, because none could be attributed to a named, dated source — see the explanation above.

Science Translational Medicine’s Journal Impact Factor by JCR data year

Clarivate issues a new Journal Impact Factor for every indexed title each June, so the figure is a property of a data year rather than of the journal. The series below runs most recent first, with the source named against every row and the date CASRAI read it. Clarivate’s Journal Citation Reports is paywalled and CASRAI has not read it directly; rows attributed to a tracker are third-party readings of Clarivate’s release, not Clarivate’s own publication. Figures for the 2021 data year and earlier are shown to three decimal places because that is how Clarivate published them at the time; from the 2022 data year Clarivate rounds the JIF to one decimal place.

AAAS states no figure on any page CASRAI could retrieve on 23 August 2026, so no row below is publisher-confirmed. The series is from BioxBio (bioxbio.com/journal/SCI-TRANSL-MED), a third-party JCR tracker. The current figure is cross-checked against wos-journal.info/journalid/194 (a third-party Web of Science tracker, confirmed on the page itself to carry ISSN 1946-6234), and the prior year against the Wikipedia infobox, which gives 14.6 for the 2024 data year. All three were read on 23 August 2026.

JCR data year	Clarivate release	Journal Impact Factor	Attributed to, read 23 August 2026
2025	June 2026	15.6	BioxBio; wos-journal.info (both agree)
2024	June 2025	14.6	BioxBio; Wikipedia infobox (both agree)
2023	June 2024	15.8	BioxBio
2022	June 2023	17.1	BioxBio
2021	June 2022	19.319	BioxBio
2020	June 2021	17.956	BioxBio
2019	June 2020	16.304	BioxBio
2018	June 2019	17.161	BioxBio
2017	June 2018	16.710	BioxBio
2016	June 2017	16.796	BioxBio
2015	June 2016	16.264	BioxBio
2014	June 2015	15.843	BioxBio
2013	June 2014	14.414	BioxBio
2012	June 2013	10.757	BioxBio

Category and quartile

Clarivate assigns Science Translational Medicine to the Web of Science categories Cell Biology and Medicine, Research & Experimental (both Science Citation Index Expanded). For the current release, wos-journal.info gives its percentage rank within its best-placed category as 97.4% (read 23 August 2026). On wos-journal.info’s own stated scale — Q1 is better than 75% of the journals in the category, Q2 better than 50%, Q3 better than 25%, Q4 the rest — 97.4% places it in Q1. CASRAI has not read the quartile in Clarivate’s Journal Citation Reports itself, so treat it as a tracker-derived reading of the category position, not as a quartile quoted from JCR. The journal sits in two Web of Science categories and wos-journal.info reports only the better of the two placements, without saying which category that is. The 5-year Impact Factor, a separate figure that widens the citation window from two years to five, is 16.8 for the current release, per wos-journal.info.

On the 13.6 figure mentioned above. An earlier paragraph on this page notes that one independent aggregator listed a figure nearer 13.6 for the 2024 data year. Both sources CASRAI could read on 23 August 2026 give 14.6 for that year: BioxBio and the Wikipedia infobox, the latter citing the Journal Citation Reports. The 13.6 reading is not corroborated by either, and CASRAI has not been able to resolve it against a primary Clarivate source.

Re-check any row above against the source named beside it before quoting it in a CV, tenure file, grant application or funder report, and say which JCR data year you mean. A rising or falling series says nothing about any individual paper published in a given year — the JIF is a journal-level average, for the reasons set out elsewhere on this page.

Why this number alone is a poor stand-in for quality

Per DORA (San Francisco Declaration on Research Assessment) and CoARA’s responsible-assessment guidance, this journal-level figure should not be used as a proxy for the quality of any individual article published in Science Translational Medicine or the merit of its authors. A journal’s JIF is heavily shaped by a small number of highly cited papers and by field-level citation norms, not by the quality of any one specific paper.

Related terms

Journal Impact Factor (JIF) — the general metric this page illustrates.
Journal Citation Reports (JCR) — the Clarivate publication a JIF is drawn from.
CiteScore — Elsevier/Scopus’s separately computed journal-level metric, using a different citation window and eligibility criteria than JCR.
DORA (San Francisco Declaration on Research Assessment) — the reform commitment behind the over-reliance caveat above.
How to look up a journal’s Impact Factor — practical guide to finding current, release-dated figures directly from a publisher or Clarivate.
Impact Factor vs. h-index — how journal-level and author-level metrics differ.

Frequently Asked Questions

What is Science Translational Medicine’s current impact factor?

CASRAI attempted to verify the figure for the current JCR cycle (2025 data year, released June 2026) directly at science.org/journal/stm during this revision; the site’s bot protection blocked the request, so no current figure is confirmed. The last figure CASRAI can attribute to a specific, dated cycle is approximately 14.6 for the 2024 data year (June 2025 release), reported by third-party sources — treat that as one cycle old, not current, and check science.org/journal/stm directly before citing a number formally.

How is Science Translational Medicine’s Impact Factor calculated?

Like every JCR-indexed title, it is a ratio: citations received in a given year to the articles and reviews published in the two preceding years, divided by the number of those citable items. Clarivate applies this same formula to every Web of Science-indexed journal.

Is Science Translational Medicine the same journal as the Journal of Translational Medicine?

No. Science Translational Medicine is published by AAAS; the Journal of Translational Medicine is a separate, unrelated title published by BioMed Central/Springer Nature. They have different editorial boards, scope, and separately computed Impact Factors.

Does Science Translational Medicine share an Impact Factor with Science or Science Advances?

No. All three are AAAS publications, but each is separately indexed by Clarivate and receives its own, independently computed Journal Impact Factor. A figure for one should never be quoted as if it applied to another.

What is Science Translational Medicine’s ISSN?

Science Translational Medicine’s ISSN is 1946-6234 (print) and 1946-6242 (online/web).

Last verified 2026-08-16. CASRAI attempted direct verification against science.org/journal/stm this session; the request was blocked by the publisher’s bot protection, so no current 2025-data-year figure is stated as fact on this page. Clarivate republishes the Journal Citation Reports every June — re-check this page after the next release, or check science.org directly from a standard browser.

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