Evidence map›Paper›PMID 18830259›Full record

ArticleLeukemia2009

PD-1/PD-L1 expression in human T-cell leukemia virus type 1 carriers and adult T-cell leukemia/lymphoma patients.

T Kozako, M Yoshimitsu, H Fujiwara, I Masamoto, S Horai, Y White, M Akimoto, S Suzuki, K Matsushita, K Uozumi and 2 more

Abstract read
PubMed Publisher
In one paragraph

Article in Leukemia, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed
2.4field-weighted citation impact, top 11% of its field
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

90 citing papers in PubMed, 177 citations in OpenAlex.

  1. Trial
  2. Review
  3. Review
  4. Pathobiological link between CD30 and abnormal lymphocytes in adult T-cell leukemia/lymphoma.Journal of clinical and experimental hematopathology : JCEH · 2025
    Review
  5. Review
  6. Article
  7. Possible Trace of HTLV-1 Virus in Modulation of Cbl-b, ITCH, and PP2A Suppressor Genes.International journal of molecular and cellular medicine · 2025
    Article
  8. Observational
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review

30 more citing papers are in PubMed but not listed here.

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

12 authors at 3 institutions in 1 country.

T KozakoDivision of Hematology and Immunology, Center for Chronic Viral Diseases, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
M Yoshimitsu
H Fujiwara
I Masamoto
S Horai
Y White
M Akimoto
S Suzuki
K Matsushita
K Uozumi
C Tei
N Arima
Kagoshima University · JPKagoshima University Hospital · JPEhime University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Adult T-cell leukemia/lymphoma (ATLL) develops after infection with human T-cell leukemia virus-1 (HTLV-1) after a long latency period. The negative regulatory programmed death-1/programmed death-1 ligand 1 (PD-1/PD-L1) pathway has been implicated in the induction of cytotoxic T-lymphocyte (CTL) exhaustion during chronic viral infection along with tumor escape from host immunity. To determine whether the PD-1/PD-L1 pathway could be involved in the establishment of persistent HTLV-1 infections and immune evasion of ATLL cells in patients, we examined PD-1/PD-L1 expression on cells from 27 asymptomatic HTLV-1 carriers (ACs) and 27 ATLL patients in comparison with cells from 18 healthy donors. PD-1 expression on HTLV-1-specific CTLs from ACs and ATLL patients was dramatically elevated. In addition, PD-1 expression was significantly higher on CD8+ T cells along with cytomegalovirus (CMV)- and Epstein-Barr virus (EBV)-specific CTLs in ATLL patients compared with ACs and control individuals. Primary ATLL cells in 21.7% of ATLL patients expressed PD-L1, whereas elevated expression was not observed in cells from ACs. Finally, in functional studies, we observed that an anti-PD-L1 antagonistic antibody upregulated HTLV-1-specific CD8+T-cell response. These observations suggest that the PD-1/PD-L1 pathway plays a role in fostering persistent HTLV-1 infections, which may further ATLL development and facilitate immune evasion by ATLL cells.

Indexed as

Antigens, CDApoptosis Regulatory ProteinsB7-H1 AntigenCase-Control StudiesCD8-Positive T-LymphocytesDisease ProgressionHumansHuman T-lymphotropic virus 1Leukemia-Lymphoma, Adult T-CellProgrammed Cell Death 1 ReceptorT-Lymphocytes, CytotoxicAntigens, CDApoptosis Regulatory ProteinsB7-H1 AntigenCD274 protein, humanPDCD1 protein, humanProgrammed Cell Death 1 Receptor

Identifiers

PMID18830259
OpenAlexW2070743897

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.