2016
DOI: 10.1007/s10689-016-9925-1
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A novel germline POLE mutation causes an early onset cancer prone syndrome mimicking constitutional mismatch repair deficiency

Abstract: In a 14-year-old boy with polyposis and rectosigmoid carcinoma, we identified a novel POLE germline mutation, p.(Val411Leu), previously found as recurrent somatic mutation in ‘ultramutated’ sporadic cancers. This is the youngest reported cancer patient with polymerase proofreading-associated polyposis indicating that POLE mutation p.(Val411Leu) may confer a more severe phenotype than previously reported POLE and POLD1 germline mutations. The patient had multiple café-au-lait macules and a pilomatricoma mimicki… Show more

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Cited by 58 publications
(53 citation statements)
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“…As discussed, the specific alterations are distinct from those typically seen in cancers with MSI [1]. Rare germline mutations in POLD1 and POLE have been described in patients with polymerase proofreading‐associated polyposis, a clinical phenotype quite similar to that of MMR deficiency [11], [12]. While germline POLD1 mutations might be involved in familial cases, there is little evidence to suggest that somatic POLD1 mutations act as a driver of spontaneous CRC, as seen in POLE mutations.…”
Section: Molecular Tumor Boardmentioning
confidence: 99%
“…As discussed, the specific alterations are distinct from those typically seen in cancers with MSI [1]. Rare germline mutations in POLD1 and POLE have been described in patients with polymerase proofreading‐associated polyposis, a clinical phenotype quite similar to that of MMR deficiency [11], [12]. While germline POLD1 mutations might be involved in familial cases, there is little evidence to suggest that somatic POLD1 mutations act as a driver of spontaneous CRC, as seen in POLE mutations.…”
Section: Molecular Tumor Boardmentioning
confidence: 99%
“…Two inherited homozygous VUS of MSH2 (c.274C>G, p.Leu92Val) and MSH6 (c.2426_2428delTAG, p.Val809del) were identified by WES and, thus, further raised the suspicion of CMMRD. As a differential diagnosis, germline mutations in POLD1 and POLE were ruled out [19]. Tumor microsatellite instability testing and immunohistochemistry analysis were inconclusive.…”
Section: Reporting Of Resultsmentioning
confidence: 99%
“…Of 83 children, most were diagnosed with leukemias (28, 33.7%) and brain tumors (19,22.9%) (Fig. 3a).…”
Section: Patient Characteristics and Medical Historymentioning
confidence: 99%
“…Eine Fülle anderer Krebserkrankungen (zum Beispiel embryonale Tumoren, Sarkome und andere) wurde im CMMRDKontext beschrieben [47,50]. Multiple Pilomatrixome können auf eine CMMRD-Erkrankung hinweisen, treten aber auch im Kontext anderer TDS auf [47,51]. Neben dem charakteristischen Tumorspektrum zeigen viele Betroffene auch charakteristische nicht-neoplastische Veränderungen, insbesondere Neurofibromatose Typ 1 (NF1)-typische oder auch NF1-untypische (unscharf begrenzte und uneinheitlich gefärbte) Café-au-lait-Flecken, aber auch Hypopigmentierungen der Haut, eine Agenesie des Corpus callosum oder milde Immunglobulin-class-switch-Defekte [47].…”
Section: Tumorspektrumunclassified