Fig. 2.
Two pairs of monozygotic twins in the discovery study. (A and B) Posteroanterior and lateral views of individual Pair 1A show a main thoracic curve of 47° and thoracic kyphosis of 13°. (C and D) Posteroanterior and lateral views of individual Pair 1B show a main thoracic curve of 22° and thoracic kyphosis of 27°. (E) Pedigree and segregation pattern in the Pair 1 family. (F and G) Posteroanterior and lateral views of individual Pair 2A show a main thoracic curve of 50° and thoracic kyphosis of 10°. (H and I) Posteroanterior and lateral views of individual Pair 2B shows a main thoracic curve of 21° and thoracic kyphosis of 28°. (J) Pedigree and segregation pattern in the Pair 2 family. Solid symbols indicated affected individuals. Squares signify males and circles, females.