Homozygous loss-of-function variants in FILIP1 cause autosomal recessive arthrogryposis multiplex congenita with microcephaly

Franziska Schnabel, Elisabeth Schuler, Almundher Al-Maawali, Ankur Chaurasia, Steffen Syrbe, Adila Al-Kindi, Gandham Sri Lakshmi Bhavani, Anju Shukla, Janine Altmüller, Peter Nürnberg, Siddharth Banka, Katta M. Girisha, Yun Li, Bernd Wollnik*, Gökhan Yigit*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Arthrogryposis multiplex congenita forms a broad group of clinically and etiologically heterogeneous disorders characterized by congenital joint contractures that involve at least two different parts of the body. Neurological and muscular disorders are commonly underlying arthrogryposis. Here, we report five affected individuals from three independent families sharing an overlapping phenotype with congenital contractures affecting shoulder, elbow, hand, hip, knee and foot as well as scoliosis, reduced palmar and plantar skin folds, microcephaly and facial dysmorphism. Using exome sequencing, we identified homozygous truncating variants in FILIP1 in all patients. FILIP1 is a regulator of filamin homeostasis required for the initiation of cortical cell migration in the developing neocortex and essential for the differentiation process of cross-striated muscle cells during myogenesis. In summary, our data indicate that bi-allelic truncating variants in FILIP1 are causative of a novel autosomal recessive disorder and expand the spectrum of genetic factors causative of arthrogryposis multiplex congenita.

Original languageEnglish
Pages (from-to)543-552
Number of pages10
JournalHuman Genetics
Issue number4
Publication statusPublished - Apr 2023

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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