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Newsletter

The Weekly Read

Thursday mornings, before nine Central. Five or six items from the week's peptide science and regulatory record, each with a sentence or two on what it establishes — and, often, on why it is less interesting than the headline made it sound.

What's in it

  • New in the literature. Trials, systematic reviews, and analytical chemistry papers, with the study design and the primary endpoint stated up front.
  • The regulatory record. Guidance documents, advisory committee materials, approvals, docket activity, and enforcement correspondence — dated, and identified by document.
  • One thing we got wrong. Any correction issued that week, repeated in the newsletter rather than buried on the page.
  • A term worth defining. One piece of vocabulary — from the literature or from the regulations — explained in a paragraph.
  • From the library. A note when a brief publishes, which is not every week.

What's never in it

  • Dosages, protocols, schedules, routes, or preparation instructions.
  • Vendor names, suppliers, marketplaces, purchase links, discount codes, or prices.
  • Sponsored items, advertising, or affiliate links — the newsletter has never carried a paid placement and is not for sale.
  • Personal anecdotes, testimonials, results claims, or before-and-after imagery.
  • Claims that any unapproved compound treats, prevents, or cures anything.
  • Anything that would need a "consult your doctor" line to be defensible. If a sentence needs that shield, we cut the sentence.
Archive

Recent issues

Subscribers receive the full text. Summaries below.

Issue 214

Composite endpoints, and what a hazard ratio is a ratio of

A cardiovascular outcomes paper published this week reported a composite primary endpoint driven largely by one of its three components — a pattern worth recognising, since the headline figure looks identical either way. Also: an updated pharmacopeial chapter on chromatographic system suitability, and a correction to our 9 July description of a 2023 guidance document's scope.

Issue 213

An advisory committee meeting, read from the briefing documents

The sponsor briefing document and the agency review memorandum for a recent advisory committee disagreed on how to characterise a subgroup finding, and both are public. We walked through where the disagreement actually sits. Term of the week: prespecified, and why it is doing more work than most readers realise.

Issue 212

Two preprints, one of which quietly changed

A preprint circulating widely on social media had been revised twice since the version being screenshotted, with a materially different results table in the current draft. How to check which version you are reading, and why the posting date on a share is not the date of the science. Plus a new international standard on laboratory accreditation scope statements.

Issue 211

Bulk substance nominations, and a docket nobody is reading

A public comment period closed this week with a handful of submissions, most from trade bodies. We summarised what was filed, by whom, and what the nomination process does and does not determine. Also: a methods paper on peptide impurity profiling that is better than its abstract suggests.

Issues 1 through 210 are available to subscribers on request. Write to hello@sequenceandsignal.com.

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