Abstract
Background and Objectives: Biliary tract cancers (BTC) including, cholangiocarcinoma (CC) and gallbladder cancer (GBC), are rare and highly fatal malignancies. The etiology and inherited susceptibility of both malignancies are poorly understood. We quantified the risk of BTC in first-degree (FDR), second-degree (SDR), and first cousin (FC) relatives of individuals with BTC, stratified by tumor subsite. Methods: BTC diagnosed between 1980 and 2011 were identified from the Utah Cancer Registry and linked to pedigrees from the Utah Population Database. Age- and gender-matched BTC-free controls were selected to form the comparison group for determining BTC risk in relatives using Cox regression analysis. Results: Of the 1302 index patients diagnosed with BTC, 550 (42.2 %) were located in the gallbladder and 752 (57.8 %) were cholangiocarcinomas. There was no elevated risk of BTC (all subsites combined) in FDRs (HR 0.94, 95 % CI 0.29–3.0), SDRs (HR 0.25, 95 % CI 0.06–1.03), and FCs (HR 0.96, 95 % CI 0.61–1.51) of BTC cases compared to cancer-free controls. Similarly, no increased familial risk of GBC or CC was found in relatives of BTC patients stratified by tumor subsite compared to relatives of controls. Conclusions: Relatives of BTC patients are not at an increased risk of GBC or CC in a statewide population. This suggests that biliary tract cancer risk is not associated with a familial predisposition and may be mitigated more strongly by environmental modifiers.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3627-3632 |
| Number of pages | 6 |
| Journal | Digestive Diseases and Sciences |
| Volume | 61 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1 2016 |
| Externally published | Yes |
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Keywords
- Biliary tract
- Cholangiocarcinoma
- Familial
- Gallbladder cancer
ASJC Scopus subject areas
- Physiology
- Gastroenterology
Cite this
Familial Risk of Biliary Tract Cancers : A Population-Based Study in Utah. / Samadder, Niloy Jewel; Smith, Ken Robert; Wong, Jathine; Hanson, Heidi; Boucher, Kenneth; Burt, Randall W.; Charlton, Michael; Byrne, Kathryn R.; Gallegos-Orozco, Juan F.; Koptiuch, Cathryn; Curtin, Karen.
In: Digestive Diseases and Sciences, Vol. 61, No. 12, 01.12.2016, p. 3627-3632.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Familial Risk of Biliary Tract Cancers
T2 - A Population-Based Study in Utah
AU - Samadder, Niloy Jewel
AU - Smith, Ken Robert
AU - Wong, Jathine
AU - Hanson, Heidi
AU - Boucher, Kenneth
AU - Burt, Randall W.
AU - Charlton, Michael
AU - Byrne, Kathryn R.
AU - Gallegos-Orozco, Juan F.
AU - Koptiuch, Cathryn
AU - Curtin, Karen
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Background and Objectives: Biliary tract cancers (BTC) including, cholangiocarcinoma (CC) and gallbladder cancer (GBC), are rare and highly fatal malignancies. The etiology and inherited susceptibility of both malignancies are poorly understood. We quantified the risk of BTC in first-degree (FDR), second-degree (SDR), and first cousin (FC) relatives of individuals with BTC, stratified by tumor subsite. Methods: BTC diagnosed between 1980 and 2011 were identified from the Utah Cancer Registry and linked to pedigrees from the Utah Population Database. Age- and gender-matched BTC-free controls were selected to form the comparison group for determining BTC risk in relatives using Cox regression analysis. Results: Of the 1302 index patients diagnosed with BTC, 550 (42.2 %) were located in the gallbladder and 752 (57.8 %) were cholangiocarcinomas. There was no elevated risk of BTC (all subsites combined) in FDRs (HR 0.94, 95 % CI 0.29–3.0), SDRs (HR 0.25, 95 % CI 0.06–1.03), and FCs (HR 0.96, 95 % CI 0.61–1.51) of BTC cases compared to cancer-free controls. Similarly, no increased familial risk of GBC or CC was found in relatives of BTC patients stratified by tumor subsite compared to relatives of controls. Conclusions: Relatives of BTC patients are not at an increased risk of GBC or CC in a statewide population. This suggests that biliary tract cancer risk is not associated with a familial predisposition and may be mitigated more strongly by environmental modifiers.
AB - Background and Objectives: Biliary tract cancers (BTC) including, cholangiocarcinoma (CC) and gallbladder cancer (GBC), are rare and highly fatal malignancies. The etiology and inherited susceptibility of both malignancies are poorly understood. We quantified the risk of BTC in first-degree (FDR), second-degree (SDR), and first cousin (FC) relatives of individuals with BTC, stratified by tumor subsite. Methods: BTC diagnosed between 1980 and 2011 were identified from the Utah Cancer Registry and linked to pedigrees from the Utah Population Database. Age- and gender-matched BTC-free controls were selected to form the comparison group for determining BTC risk in relatives using Cox regression analysis. Results: Of the 1302 index patients diagnosed with BTC, 550 (42.2 %) were located in the gallbladder and 752 (57.8 %) were cholangiocarcinomas. There was no elevated risk of BTC (all subsites combined) in FDRs (HR 0.94, 95 % CI 0.29–3.0), SDRs (HR 0.25, 95 % CI 0.06–1.03), and FCs (HR 0.96, 95 % CI 0.61–1.51) of BTC cases compared to cancer-free controls. Similarly, no increased familial risk of GBC or CC was found in relatives of BTC patients stratified by tumor subsite compared to relatives of controls. Conclusions: Relatives of BTC patients are not at an increased risk of GBC or CC in a statewide population. This suggests that biliary tract cancer risk is not associated with a familial predisposition and may be mitigated more strongly by environmental modifiers.
KW - Biliary tract
KW - Cholangiocarcinoma
KW - Familial
KW - Gallbladder cancer
UR - http://www.scopus.com/inward/record.url?scp=84988661367&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84988661367&partnerID=8YFLogxK
U2 - 10.1007/s10620-016-4310-3
DO - 10.1007/s10620-016-4310-3
M3 - Article
C2 - 27655103
AN - SCOPUS:84988661367
VL - 61
SP - 3627
EP - 3632
JO - Digestive Diseases and Sciences
JF - Digestive Diseases and Sciences
SN - 0163-2116
IS - 12
ER -