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Peginterferon alfa-2a

pharmaceutical drug

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJan 29, 2026
Entity authorityQ420056 ↗
Source-derived summary

Pegylated interferon alfa-2a, sold under the brand name Pegasys among others, is medication used to treat hepatitis C and hepatitis B. For hepatitis C it is typically used together with ribavirin and cure rates are between 24 and 92%. For hepatitis B it may be used alone. It is given by injection under the skin.

Side effects are common. They may include headache, feeling tired, depression, trouble sleeping, hair loss, nausea, pain at the site of injection, and fever. Severe side effects may include psychosis, autoimmune disorders, blood clots, or infections. Use with ribavirin is not recommended during pregnancy. Pegylated interferon alfa-2a is in the alpha interferon family of medications. It is pegylated to protect the molecule from breakdown.

Pegylated interferon alfa-2a was approved for medical use in the United States in 2002.

Editorial summary

This brief starts where responsible research should: with the source description of “Peginterferon alfa-2a” as pharmaceutical drug. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2002—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Peginterferon, alfa-2a and pharmaceutical can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as pharmaceutical drug. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jan 29, 2026. The linked authority identifier is Q420056. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2002.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
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The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Peginterferon alfa-2a”, its source revision and the description used here.
  2. Expand the search: follow Peginterferon alfa-2a primary sources, Peginterferon alfa-2a archive and Peginterferon research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Peginterferon alfa-2a”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
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Source & attribution

This entry incorporates text from “Peginterferon alfa-2a” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.