Evidence map›Paper›PMID 31618438›Full record

Trial reportClinical and experimental immunology2020

Serum immunoglobulin free light chain levels in systemic autoimmune rheumatic diseases.

F Gulli, C Napodano, M Marino, G Ciasca, K Pocino, V Basile, M Visentini, A Stefanile, L Todi, M De Spirito and 2 more

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in Clinical and experimental immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

19 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Comparative analysis ofFrontiers in pharmacology · 2025
    Article
  6. MGCS: where do we stand today?Hematology. American Society of Hematology. Education Program · 2024
    Review
  7. Article
  8. Article
  9. Free Light ChainsInternational journal of molecular sciences · 2023
    Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
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 5 institutions in 1 country.

F GulliDipartimento di Medicina di Laboratorio, Ospedale Madre Giuseppina Vannini, Rome, Italy.
C NapodanoIstituto di Medicina Interna, Università Cattolica del Sacro Cuore, Rome, Italy.
M MarinoIstituto di Patologia Generale, Università Cattolica del Sacro Cuore, Rome, Italy.ORCID 0000-0001-9155-6378
G CiascaFondazione Policlinico Universitario 'A. Gemelli' - I.R.C.C.S, Rome, Italy.
K PocinoIstituto di Medicina Interna, Università Cattolica del Sacro Cuore, Rome, Italy.
V BasileDipartimento di Medicina di Laboratorio, Università di Tor Vergata, Rome, Italy.
M VisentiniDipartimento di Medicina Traslazionale e di Precisione, Università di Roma La Sapienza, Rome, Italy.
A StefanileArea Diagnostica di Laboratorio, Fondazione Policlinico Universitario 'A. Gemelli', IRCCS, Rome, Italy.
L TodiIstituto di Patologia Generale, Università Cattolica del Sacro Cuore, Rome, Italy.
M De SpiritoFondazione Policlinico Universitario 'A. Gemelli' - I.R.C.C.S, Rome, Italy.
G L RapacciniIstituto di Medicina Interna, Università Cattolica del Sacro Cuore, Rome, Italy.
U BasileArea Diagnostica di Laboratorio, Fondazione Policlinico Universitario 'A. Gemelli', IRCCS, Rome, Italy.
Università Cattolica del Sacro Cuore · ITAgostino Gemelli University Polyclinic · ITOspedale Garibaldi · ITSapienza University of Rome · ITUniversity of Rome Tor Vergata · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Several reports have highlighted the abnormal increments of serum immunoglobulin free light chains (FLCs) in the course of systemic autoimmune rheumatic diseases (SARD), but a comparative analysis among different conditions is still lacking. A strong association between elevated FLC and hepatitis C virus (HCV)-related mixed cryoglobulinaemia (HCVMC) has been well established. Here, we aimed to analyse serum FLC levels in patients with four different SARD in comparison with HCVMC. Using a turbidimetric assay, free κ and λ chains were quantified in sera from 198 SARD patients (37 rheumatoid arthritis, RA; 47 systemic lupus erythematosus, SLE; 52 anti-phospholipid syndrome, APS; 62 primary Sjogren's syndrome, pSS), 62 HCVMC and 50 healthy blood donors (HD). All patient groups showed increased κ levels when compared to HD: 33·5 ± 2·6 mg/l in HCVMC, 26·7 ± 2·3 mg/l in RA, 29·7 ± 1·9 mg/l in SLE, 23·8 ± 1·1 mg/l in APS, 24·2 ± 1·1 mg/l in pSS; 10·1 ± 0·6 mg/l in HD. Free λ levels displayed a significant increase only for HCVMC (20·4 ± 1·4 mg/l) and SLE (18·4 ± 1·0 mg/l) compared to HD (13·6 ± 0·9 mg/l). The increase of κ compared to λ takes into account a κ /λ ratio of 1·6 for all groups. Our results substantially analyse and strengthen the association between FLC and SARD focusing the questions regarding their role in the pathogenesis and diagnosis of human diseases. Unfortunately, the biochemical differences distinguishing normal from pathological FLC have not been identified. Production of different isotypes is probably connected to still-unknown pathways.

Indexed as

HepacivirusAgedAutoimmune DiseasesCryoglobulinemiaFemaleHepatitis CHumansImmunoglobulin kappa-ChainsImmunoglobulin lambda-ChainsMaleMiddle AgedRheumatic DiseasesImmunoglobulin kappa-ChainsImmunoglobulin lambda-ChainsB lymphocytesFLCmini autoantibodiesmixed cryoglobulinaemiaSARD

Identifiers

PMID31618438
PMCPMC6954672
OpenAlexW2980397701

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.