Evidence map›Paper›PMID 17351135›Full record

ArticleGenome research2007

Low copy repeats mediate distal chromosome 22q11.2 deletions: sequence analysis predicts breakpoint mechanisms.

Tamim H Shaikh, Ronald J O'Connor, Mary Ella Pierpont, James McGrath, April M Hacker, Manjunath Nimmakayalu, Elizabeth Geiger, Beverly S Emanuel, Sulagna C Saitta

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 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

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 125 citations in OpenAlex.

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  7. Resolving the 22q11.2 deletion using CTLR-Seq reveals chromosomal rearrangement mechanisms and individual variance in breakpoints.Proceedings of the National Academy of Sciences of the United States of America · 2024
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3 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

9 authors at 3 institutions in 1 country.

Tamim H ShaikhDivision of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
Ronald J O'Connor
Mary Ella Pierpont
James McGrath
April M Hacker
Manjunath Nimmakayalu
Elizabeth Geiger
Beverly S Emanuel
Sulagna C Saitta
Children's Hospital of Philadelphia · USUniversity of Minnesota Children's Hospital · USYale University · US

Funding

MOLECULAR APPROACHES TO PEDIATRIC SCIENCE - CHRCP30HD028815 · NICHD · CHILDREN'S HOSPITAL OF PHILADELPHIA · PI SURREY, SAUL · 1992 to 2002
$1.0M
Evolution of Chromosome-specific Low Copy RepeatsR01GM064725 · NIGMS · CHILDRENS HOSPITAL OF PHILADELPHIA · PI SHAIKH, TAMIM H · 2002 to 2005
$1000k
MOLECULAR MECHANISM OF CARDIAC OUTFLOW TRACT DEVELOPMENTK08HL004487 · NHLBI · CHILDRENS HOSPITAL OF PHILADELPHIA · PI SAITTA, SULAGNA C · 2001 to 2005
$651k
NHLBI NIH HHS K08 HL004487NHLBI NIH HHS K08 HL04487NICHD NIH HHS P30 HD28815NIGMS NIH HHS R01 GM064725NIGMS NIH HHS R01 GM64725
6 · The paper itself

Abstract

Genomic disorders contribute significantly to genetic disease and, as detection methods improve, greater numbers are being defined. Paralogous low copy repeats (LCRs) mediate many of the chromosomal rearrangements that underlie these disorders, predisposing chromosomes to recombination errors. Deletions of proximal 22q11.2 comprise the most frequently occurring microdeletion syndrome, DiGeorge/Velocardiofacial syndrome (DGS/VCFS), in which most breakpoints have been localized to a 3 Mb region containing four large LCRs. Immediately distal to this region, there are another four related but smaller LCRs that have not been characterized extensively. We used paralog-specific primers and long-range PCR to clone, sequence, and examine the distal deletion breakpoints from two patients with de novo deletions mapping to these distal LCRs. Our results present definitive evidence of the direct involvement of LCRs in 22q11 deletions and map both breakpoints to the BCRL module, common to most 22q11 LCRs, suggesting a potential region for LCR-mediated rearrangement both in the distal LCRs and in the DGS interval. These are the first reported cases of distal 22q11 deletions in which breakpoints have been characterized at the nucleotide level within LCRs, confirming that distal 22q11 LCRs can and do mediate rearrangements leading to genomic disorders.

Indexed as

Chromosome BreakageChromosome DeletionRepetitive Sequences, Nucleic AcidAbnormalities, MultipleBase SequenceChildChild, PreschoolChromosomes, Human, Pair 22Craniofacial AbnormalitiesDevelopmental DisabilitiesDNAHumansModels, GeneticMolecular Sequence DataPolymerase Chain ReactionSequence Analysis, DNADNA

Identifiers

PMID17351135
PMCPMC1832095
OpenAlexW1971972795

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.