Evidence map›Paper›PMID 19707206›Full record

ArticleBritish journal of cancer2009

Breastfeeding and early infection in the aetiology of childhood leukaemia in Down syndrome.

J Flores-Lujano, M L Perez-Saldivar, E M Fuentes-Pananá, C Gorodezky, R Bernaldez-Rios, M A Del Campo-Martinez, A Martinez-Avalos, A Medina-Sanson, R Paredes-Aguilera, J De Diego-Flores Chapa and 10 more

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In one paragraph

Article in British journal of cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 3 pooled it
–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

13 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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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

20 authors.

J Flores-LujanoUnidad de Investigacion en Epidemiologia Clinica, Hospital de Pediatria, Centro Medico Nacional Siglo XXI (IMSS), Quetzal 27, Las Arboledas, 52950 Mexico DF, Mexico.
M L Perez-Saldivar
E M Fuentes-Pananá
C Gorodezky
R Bernaldez-Rios
M A Del Campo-Martinez
A Martinez-Avalos
A Medina-Sanson
R Paredes-Aguilera
J De Diego-Flores Chapa
V Bolea-Murga
M C Rodriguez-Zepeda
R Rivera-Luna
M A Palomo-Colli
L Romero-Guzman
P Perez-Vera
M Alvarado-Ibarra
F Salamanca-Gómez
A Fajardo-Gutierrez
J M Mejía-Aranguré

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFor a child to develop acute leukaemia (AL), environmental exposure may not be sufficient: interaction with a susceptibility factor to the disease, such as Down syndrome (DS), may also be necessary. We assessed whether breastfeeding and early infection were associated with the risk of developing AL in children with DS.

methodsChildren with DS in Mexico City, and either with or without AL, were the cases (N=57) and controls (N=218), respectively. Population was divided in children with AL and with acute lymphoblastic leukaemia (ALL) and also in children < or = 6 and >6 years old.

resultsBreastfeeding and early infections showed moderate (but not significant) association for AL, whereas hospitalisation by infection during the first year of life increased the risk: odds ratios (confidence interval 95%) were 0.84 (0.43-1.61), 1.70 (0.82-3.52); and 3.57 (1.59-8.05), respectively. A similar result was obtained when only ALL was analysed.

conclusionWe found that breastfeeding was a protective factor for developing AL and ALL, and during the first year of life, infections requiring hospitalisation were related to a risk for developing the disease in those children with DS >6 years of age. These data do not support the Greaves's hypothesis of early infection being protective for developing ALL.

Indexed as

Acute DiseaseAdolescentBreast FeedingCase-Control StudiesChildChild, PreschoolDown SyndromeFemaleHumansInfantInfant, NewbornInfectionsLeukemia, MyeloidMaleOdds RatioPrecursor Cell Lymphoblastic Leukemia-Lymphoma

Identifiers

PMID19707206
PMCPMC2736848

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Registered trials

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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.