A rare haplotype in the upstream regulatory region of COL1A1 is associated with reduced bone quality and hip fracture

Huilin Jin, Tracy L Stewart, Rob Van't Hof, David M Reid, Richard M Aspden, Stuart Ralston

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Three polymorphisms have been identified in the 5' regulatory region of the COL1A1 gene at positions -1997 (rs1107946), -1663 (rs2412298), and +1245G/T (rs1800012), which combine to form haplotypes that have been associated with BMD in several populations. These polymorphisms and haplotypes have not thus far been studied in relation to biomechanical properties of bone or fracture risk. Genotypes and haplotypes of the COL1A1 gene were related to the biomechanical properties of bone ex vivo in samples of bone tissue obtained from the femoral head of 98 consecutive patients undergoing surgery for low-trauma hip fractures. Genotype and haplotype frequencies in the hip fracture cases were compared with 3418 population-based controls recruited from the same region. All three polymorphisms were associated with material density of the bone core, yield strength, and toughness. The association between -1663InsdelT and +1245G/T alleles, yield strength, and toughness remained significant after adjusting for material density of the core and other confounding factors. A haplotype comprising the unfavorable allele at all three polymorphic sites (-1997T/-1663delT/+1245T) was also associated with yield strength, modulus, and toughness after adjusting for confounding factors. This haplotype was carried by 19/94 (20.2%) patients with hip fracture compared with only 2/3399 (0.06%) female controls drawn from the general population (p <0.0001). In contrast, there was no significant difference between cases and controls in genotype distribution for the individual polymorphisms. This study shows that common genetic variants in the 5' regulatory region of COL1A1 are associated with biomechanical properties of bone and reduced bone quality by mechanisms independent of their effects on BMD. The biomechanically unfavorable allele at each polymorphic site defines a haplotype that is extremely rare in the general population but that is approximately 400-fold enriched in hip fracture patients. This haplotype may have clinical value as a genetic marker for susceptibility to hip fracture, and further studies to investigate this possibility would be of interest.
Original languageEnglish
Pages (from-to)448-454
Number of pages7
JournalJournal of Bone and Mineral Research
Volume24
Issue number3
Early online date3 Nov 2008
DOIs
Publication statusPublished - Mar 2009

Fingerprint

Nucleic Acid Regulatory Sequences
Bone Fractures
Hip Fractures
Haplotypes
Alleles
Genotype
Bone and Bones
Population
Gene Order
Population Control
Genetic Predisposition to Disease
Thigh
Genetic Markers
Bone Density
Wounds and Injuries
Genes

Keywords

  • biomechanics
  • bone and bones
  • case-control studies
  • collagen type I
  • female
  • genetic predisposition to disease
  • haplotypes
  • hip fractures
  • humans
  • male
  • polymorphism, single nucleotide
  • regression analysis
  • regulatory sequences, nucleic acid
  • COL1A1
  • genetic
  • polymorphism
  • hip fracture

Cite this

A rare haplotype in the upstream regulatory region of COL1A1 is associated with reduced bone quality and hip fracture. / Jin, Huilin; Stewart, Tracy L; Van't Hof, Rob; Reid, David M; Aspden, Richard M; Ralston, Stuart.

In: Journal of Bone and Mineral Research, Vol. 24, No. 3, 03.2009, p. 448-454.

Research output: Contribution to journalArticle

Jin, Huilin ; Stewart, Tracy L ; Van't Hof, Rob ; Reid, David M ; Aspden, Richard M ; Ralston, Stuart. / A rare haplotype in the upstream regulatory region of COL1A1 is associated with reduced bone quality and hip fracture. In: Journal of Bone and Mineral Research. 2009 ; Vol. 24, No. 3. pp. 448-454.
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abstract = "Three polymorphisms have been identified in the 5' regulatory region of the COL1A1 gene at positions -1997 (rs1107946), -1663 (rs2412298), and +1245G/T (rs1800012), which combine to form haplotypes that have been associated with BMD in several populations. These polymorphisms and haplotypes have not thus far been studied in relation to biomechanical properties of bone or fracture risk. Genotypes and haplotypes of the COL1A1 gene were related to the biomechanical properties of bone ex vivo in samples of bone tissue obtained from the femoral head of 98 consecutive patients undergoing surgery for low-trauma hip fractures. Genotype and haplotype frequencies in the hip fracture cases were compared with 3418 population-based controls recruited from the same region. All three polymorphisms were associated with material density of the bone core, yield strength, and toughness. The association between -1663InsdelT and +1245G/T alleles, yield strength, and toughness remained significant after adjusting for material density of the core and other confounding factors. A haplotype comprising the unfavorable allele at all three polymorphic sites (-1997T/-1663delT/+1245T) was also associated with yield strength, modulus, and toughness after adjusting for confounding factors. This haplotype was carried by 19/94 (20.2{\%}) patients with hip fracture compared with only 2/3399 (0.06{\%}) female controls drawn from the general population (p <0.0001). In contrast, there was no significant difference between cases and controls in genotype distribution for the individual polymorphisms. This study shows that common genetic variants in the 5' regulatory region of COL1A1 are associated with biomechanical properties of bone and reduced bone quality by mechanisms independent of their effects on BMD. The biomechanically unfavorable allele at each polymorphic site defines a haplotype that is extremely rare in the general population but that is approximately 400-fold enriched in hip fracture patients. This haplotype may have clinical value as a genetic marker for susceptibility to hip fracture, and further studies to investigate this possibility would be of interest.",
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T1 - A rare haplotype in the upstream regulatory region of COL1A1 is associated with reduced bone quality and hip fracture

AU - Jin, Huilin

AU - Stewart, Tracy L

AU - Van't Hof, Rob

AU - Reid, David M

AU - Aspden, Richard M

AU - Ralston, Stuart

PY - 2009/3

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N2 - Three polymorphisms have been identified in the 5' regulatory region of the COL1A1 gene at positions -1997 (rs1107946), -1663 (rs2412298), and +1245G/T (rs1800012), which combine to form haplotypes that have been associated with BMD in several populations. These polymorphisms and haplotypes have not thus far been studied in relation to biomechanical properties of bone or fracture risk. Genotypes and haplotypes of the COL1A1 gene were related to the biomechanical properties of bone ex vivo in samples of bone tissue obtained from the femoral head of 98 consecutive patients undergoing surgery for low-trauma hip fractures. Genotype and haplotype frequencies in the hip fracture cases were compared with 3418 population-based controls recruited from the same region. All three polymorphisms were associated with material density of the bone core, yield strength, and toughness. The association between -1663InsdelT and +1245G/T alleles, yield strength, and toughness remained significant after adjusting for material density of the core and other confounding factors. A haplotype comprising the unfavorable allele at all three polymorphic sites (-1997T/-1663delT/+1245T) was also associated with yield strength, modulus, and toughness after adjusting for confounding factors. This haplotype was carried by 19/94 (20.2%) patients with hip fracture compared with only 2/3399 (0.06%) female controls drawn from the general population (p <0.0001). In contrast, there was no significant difference between cases and controls in genotype distribution for the individual polymorphisms. This study shows that common genetic variants in the 5' regulatory region of COL1A1 are associated with biomechanical properties of bone and reduced bone quality by mechanisms independent of their effects on BMD. The biomechanically unfavorable allele at each polymorphic site defines a haplotype that is extremely rare in the general population but that is approximately 400-fold enriched in hip fracture patients. This haplotype may have clinical value as a genetic marker for susceptibility to hip fracture, and further studies to investigate this possibility would be of interest.

AB - Three polymorphisms have been identified in the 5' regulatory region of the COL1A1 gene at positions -1997 (rs1107946), -1663 (rs2412298), and +1245G/T (rs1800012), which combine to form haplotypes that have been associated with BMD in several populations. These polymorphisms and haplotypes have not thus far been studied in relation to biomechanical properties of bone or fracture risk. Genotypes and haplotypes of the COL1A1 gene were related to the biomechanical properties of bone ex vivo in samples of bone tissue obtained from the femoral head of 98 consecutive patients undergoing surgery for low-trauma hip fractures. Genotype and haplotype frequencies in the hip fracture cases were compared with 3418 population-based controls recruited from the same region. All three polymorphisms were associated with material density of the bone core, yield strength, and toughness. The association between -1663InsdelT and +1245G/T alleles, yield strength, and toughness remained significant after adjusting for material density of the core and other confounding factors. A haplotype comprising the unfavorable allele at all three polymorphic sites (-1997T/-1663delT/+1245T) was also associated with yield strength, modulus, and toughness after adjusting for confounding factors. This haplotype was carried by 19/94 (20.2%) patients with hip fracture compared with only 2/3399 (0.06%) female controls drawn from the general population (p <0.0001). In contrast, there was no significant difference between cases and controls in genotype distribution for the individual polymorphisms. This study shows that common genetic variants in the 5' regulatory region of COL1A1 are associated with biomechanical properties of bone and reduced bone quality by mechanisms independent of their effects on BMD. The biomechanically unfavorable allele at each polymorphic site defines a haplotype that is extremely rare in the general population but that is approximately 400-fold enriched in hip fracture patients. This haplotype may have clinical value as a genetic marker for susceptibility to hip fracture, and further studies to investigate this possibility would be of interest.

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KW - case-control studies

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KW - female

KW - genetic predisposition to disease

KW - haplotypes

KW - hip fractures

KW - humans

KW - male

KW - polymorphism, single nucleotide

KW - regression analysis

KW - regulatory sequences, nucleic acid

KW - COL1A1

KW - genetic

KW - polymorphism

KW - hip fracture

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JO - Journal of Bone and Mineral Research

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