Evidence map›Paper›PMID 33646878›Full record

ArticleHealth affairs (Project Hope)2021

Spending For Orphan Indications Among Top-Selling Orphan Drugs Approved To Treat Common Diseases.

Kao-Ping Chua, Lauren E Kimmel, Rena M Conti

Abstract read
In one paragraph

Article in Health affairs (Project Hope), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. Advances in Cell and Gene Therapy for Rare Disease Treatment.International journal of stem cells · 2025
    Review
  2. Article
  3. Special FDA designations for drug development: orphan, fast track, accelerated approval, priority review, and breakthrough therapy.The European journal of health economics : HEPAC : health economics in prevention and care · 2024
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Kao-Ping ChuaKao-Ping Chua (chuak@med.umich.edu) is an assistant professor in the Department of Pediatrics and the Susan B. Meister Child Health Evaluation and Research Center at the University of Michigan Medical School, and an assistant professor in the Department of Health Management and Policy at the University of Michigan School of Public Health, both in Ann Arbor, Michigan.
Lauren E KimmelLauren E. Kimmel is a law student at the University of Michigan School of Law. She was a research assistant in the Department of Pediatrics at the University of Michigan when this work was performed.
Rena M ContiRena M. Conti is an associate professor in the Department of Markets, Public Policy, and Law at the Questrom Boston University School of Business, in Boston, Massachusetts.

Funding

Using Default Opioid Prescription Settings to Limit Excessive Opioid Prescribing to Adolescents and Young AdultsK08DA048110 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CHUA, KAO-PING · 2019 to 2023
$983k
NIDA NIH HHS K08 DA048110
6 · The paper itself

Abstract

The Orphan Drug Act of 1983 provides benefits to promote the development of treatments for rare diseases that have limited sales potential. Policy makers have questioned whether this purpose is furthered in the case of "partial orphan drugs" approved to treat both rare and common diseases, as many of these drugs are top sellers. In this study we used national commercial claims data to estimate the proportion of spending in the US on fifteen top-selling partial orphan drugs that was assigned to orphan indications in 2018. Of this spending, 21.4 percent was assigned to orphan indications, 70.7 percent to nonorphan indications, and 7.9 percent to neither orphan nor nonorphan indications (for example, off-label use). These findings support growing concerns regarding the costs of granting orphan drug benefits to the sponsors of top-selling partial orphan drugs.

Indexed as

Drug ApprovalOrphan Drug ProductionCosts and Cost AnalysisDelivery of Health CareHumansRare DiseasesUnited States

Identifiers

PMID33646878
PMCPMC8011952

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.